Sign In or Create an Account.

By continuing, you agree to the Terms of Service and acknowledge our Privacy Policy

Technology

What Does Amazon Want With Nuclear?

The tech giant’s $650 million deal with Talen Energy has a lot to unpack.

A nuclear tower.
Heatmap Illustration/Getty Images

When Talen Energy, which owns a 90% interest in the Susquehanna nuclear power plant in Northeastern Pennsylvania, announced it was selling a data center site adjacent to its power plant to Amazon Web Services, it raised some eyebrows in the energy world. The surprise was not because a large tech company made a big deal with a carbon-free power provider, or even that a tech company made a deal to buy power generated by a nuclear power plant. It was because Amazon was making this deal.

Amazon is a massive buyer of renewable power — it claims to be the world’s largest and says it’s responsible for 28 gigawatts of clean energy capacity — signing contracts with new wind and solar projects all over the world.

But a divide has opened up among tech giants when it comes to energy, with Amazon on one side and Alphabet and Microsoft on the other. The difference hinges on how much it matters where and when the new carbon-free power a company buys in order to match its electricity use.

What’s odd about the Talen deal is that it fits awkwardly into either approach, especially Amazon’s. Amazon does not count nuclear towards its renewable power goals, and in any case, it’s not a “new” source of carbon-free power. Instead, it allows Amazon to siphon somewhere between 480 and 960 megawatts of capacity from the 2,500 megawatt plant.

“Amazon needs power, they’re getting it at cheap rates. They don’t even want to talk about it like a climate thing,” Mark Nelson, the founder of Radiant Energy Group, told me.

In the past decade or so, technology companies have gone on a clean-power buying spree, funding new wind and solar projects all over the world. But there has been a divergence in what is thought to be the best way to go about it.

In 2019, Amazon announced a goal to add enough renewable power to the grid to match its own emissions by 2030 (since moved up to 2025) and to reach net zero by 2040.

Google has been 100% renewable in terms of buying clean power in the same amounts that it consumes since 2017. So in 2020, it set a new goal: to “run on 24/7 carbon-free energy on every grid where we operate by 2030.” This would mean not just matching total renewable purchases with total emissions, as Amazon is seeking to do, but also trying to get every hour of data center operation “matched” with an hour of renewable generation on the same grid.

Microsoft has a similar goal, and as a result, both companies have shown much more interest in nuclear power of late than is typical in the technology world.

“A huge bottleneck for growth for Amazon, Google, Microsoft, Facebook is access to constant electricity,” Nelson told me. Nuclear is a carbon-free electricity resource that can run at a steady output 24 hours a day, whereas wind and solar are both inherently variable.

Microsoft signed a deal with Constellation to supply power to data centers in Virginia and hired an official from the Tennessee Valley Authority to be its director of nuclear and energy innovations, while Microsoft founder Bill Gates and Sam Altman, the head of Microsoft-backed OpenAI have both invested in nuclear startups, as has Google.

Amazon’s approach — which it shares with several other large companies, including Meta — is not to match 24 hours of its operations with clean power bought locally, but rather to develop and purchase new wind and solar at the same scale of the power it consumes, especially in areas with dirty grids, thus matching the emissions from its consumption with the emissions reductions of new renewables projects. While a 24/7 matching approach may be naturally complementary with nuclear power, Amazon’s strategy doesn’t require it.

“We believe a focus on emissions is the fastest, most cost-effective and scalable way to leverage corporate clean energy procurement to help decarbonize global power grids at the fastest pace,” an Amazon spokesperson told me. “This includes procuring renewable energy in locations and countries that still rely heavily on fossil fuels to power their grids, and where energy projects can have the biggest impact on carbon reduction.”

Contracting out new renewable energy projects can have more bang for your buck in dirty grids, according to proponents of the Amazon philosophy, known as carbon matching. The hypothesis is that a renewable project in a fossil fuel-heavy grid will displace more dirty power than one that’s located near a datacenter in an already relatively clean grid like California or Washington State.

Princeton researchers who examined the carbon matching (Amazon) and temporal matching (Google and Microsoft) strategies argued that the carbon matching approach does not necessarily lead to more renewables — or less fossil fuels — on the grid than would have occurred in the absence of the tech companies, and thus does not actually greatly lower emissions. The temporal approach, on the other hand, can meaningfully displace fossil fuel power that would otherwise have to be on the grid to meet demand.

Nuclear advocates are clear-eyed that this deal won’t cause a new generating unit to sprout up out of the Susquehanna Valley. But they still see it as the kind of deal that can help ensure nuclear plants’ continued survival. Amazon’s $650 million buys it a 10-year agreement to purchase power from the plant, as well as “additional revenue from AWS related to sales of carbon-free energy to the grid,” which an Amazon spokesperson explained as a reference to the deal “ensur[ing] that the nuclear plant has stable revenues to continue generating clean power to the grid for the foreseeable future.”

Nelson, a passionate advocate for nuclear power, lamented the mass shutdown of nuclear power plants in the 2010s thanks to cheap natural gas knocking them out of power markets that didn’t value reliability or carbon-free energy. But now, he says, things are different.

“Now nuclear is getting valued for its climate properties, reliability, and low cost. We’re seeing nuclear plants cash in,” Nelson told me. “Long term PPAs with cold hard cash help me sleep better at night.”

Blue
Matthew Zeitlin profile image

Matthew Zeitlin

Matthew is a correspondent at Heatmap. Previously he was an economics reporter at Grid, where he covered macroeconomics and energy, and a business reporter at BuzzFeed News, where he covered finance. He has written for The New York Times, the Guardian, Barron's, and New York Magazine. Read More

Read More
Podcast

The EPA’s Carbon Crackdown Is Finally Here

Inside a special edition of Shift Key.

EPA Headquarters.
Heatmap Illustration/Getty Images

One of the most important pieces of the Biden administration’s climate policy has arrived: On Thursday, the Environmental Protection Agency issued new rules restricting climate pollution from coal-fired plants and natural gas plants that haven’t been built yet. The rules will eliminate more than a billion tons of greenhouse gas pollution by the middle of the century.

They are the long-awaited “stick” in the Biden administration’s carrots-and-sticks climate policy. So how do the rules work? Why do they emphasize carbon capture so much? And is this the end of coal in America? On this special episode of Shift Key, Rob and Jesse dig into the regulations and why they matter to American climate policy. Shift Key is hosted by Robinson Meyer is founding executive editor of Heatmap, and Jesse Jenkins is a professor of energy systems engineering at Princeton University.

Keep reading...Show less
Green
Economy

Can Biden Ditch Coal Without Killing Coal Country?

The end has been coming for a while. With the EPA’s new power plant emissions rules, though, it’s gotten a lot closer.

President Biden standing on coal.
Heatmap Illustration/Getty Images

There’s no question that coal is on its way out in the U.S. In 2001, coal-fired power plants generated about 50% of U.S. electricity. Last year, they were down to about 15%.

On Thursday, however, the Biden administration arguably delivered a death blow. New carbon emission limits for coal plants establish a clear timeline by which America’s remaining coal generators must either invest in costly carbon capture equipment or close. With many of these plants already struggling to compete with cheaper renewables and natural gas, it’s not likely to be much of a choice. If the rule survives legal challenges, the nation’s coal fleet could be extinct by 2039.

Keep reading...Show less
Blue
Climate

AM Briefing: A Verdict on Dubai’s Deluge

On a new World Weather Attribution report, falling battery prices, and another energy milestone for California.

Briefing image.
Biden’s Plan to Jumpstart Offshore Wind
Heatmap Illustration/Getty Images

Current conditions: Flash floods killed at least 155 people in Tanzania • Dry conditions are spawning dust devils in western Canada • Ongoing thunderstorms are set to pummel the central U.S. with hail and possible sporadic tornadoes through the weekend.

THE TOP FIVE

1. Climate change worsened Dubai flooding

Rising global temperatures due to carbon dioxide buildup in the atmosphere exacerbated the deadly flooding in Dubai earlier this month, scientists at the international research initiative World Weather Attribution concluded. Much of the United Arab Emirates lacks drainage infrastructure because rain there is so infrequent, and the unrelenting downpour that inundated the country on April 14 and 15 — toppling its 24-hour rainfall record — came on the heels of a stormy March. The latest report from the Intergovernmental Panel on Climate Change determined that bouts of intense rainfall are likely to become more common in the Arabian Peninsula.

Keep reading...Show less