Google Embraces Nuclear Energy to Power AI Data Centers

ODSC - Open Data Science
3 min readOct 22, 2024

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Google has taken a major step toward sustainable energy by signing a deal with Kairos Power to use small nuclear reactors to power its AI data centers. This move aligns with growing trends in the tech industry, as companies seek reliable and clean energy sources to fuel the rising power demands of AI operations.

The agreement will see Google begin using Kairos Power’s reactors later this decade. There are also plans to scale up by 2035. However, details about the financial aspects and locations of the nuclear plants have not yet been disclosed.

Nuclear Energy for AI’s Growing Demands

As AI technology advances, so does the need for vast amounts of electricity to operate data centers. Michael Terrell, Google’s Senior Director for Energy and Climate, emphasized the importance of new energy sources to meet this growing demand. “The grid needs new electricity sources to support AI technologies,” said Terrell. “This agreement helps accelerate a new technology to meet energy needs cleanly and reliably, and unlock the full potential of AI for everyone.”

Kairos Power, a California-based startup, specializes in small modular reactors that use molten fluoride salt as a coolant. This design sets them apart from traditional nuclear reactors, which rely on water for cooling.

According to Jeff Olson, an executive at Kairos Power, the collaboration with Google is critical for demonstrating the technical and market viability of advanced nuclear energy. “This deal accelerates the commercialization of a solution essential for decarbonizing power grids,” Olson stated.

Regulatory Hurdles and Industry Trends

Before the project can proceed, it must receive approval from the U.S. Nuclear Regulatory Commission and local agencies. Kairos Power recently made strides in this area, becoming the first company in 50 years to receive a permit for building a new type of nuclear reactor in the U.S.

In July, construction began on a demonstration reactor in Tennessee, marking a key milestone for the startup. Tech companies are increasingly turning to nuclear energy to power their data centers.

Microsoft recently announced its plans to restart operations at the Three Mile Island energy plant, and Amazon is set to purchase a nuclear-powered data center in Pennsylvania. Somnath Kansabanik of Rystad Energy commented on this growing trend, stating, “Google’s partnership with Kairos Power signals another major step in tech’s embrace of nuclear energy.”

Powering the Future of AI

Data centers, which require immense power to run specialized hardware and maintain cooling systems, are expected to significantly increase global energy consumption. A report from Goldman Sachs predicts that data center energy usage will more than double by the end of this decade.

Nuclear energy’s consistent output makes it an attractive option for tech firms seeking to balance energy demands with sustainability goals. The U.S., along with other countries, has pledged to triple its nuclear energy capacity by 2050 in efforts to reduce reliance on fossil fuels.

While nuclear energy offers promising solutions, it is not without controversy. Critics point to the risks of long-lasting radioactive waste and potential accidents, referencing past incidents like the 1979 Three Mile Island disaster.

As Google and other tech giants move toward nuclear power, the conversation surrounding the future of sustainable energy in the AI-driven world will continue to evolve.

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