Small Nuclear Reactors May Power Clean Data Center Future

America's booming data centers might soon run on compact nuclear reactors that fit in a couple of buildings instead of polluting gas turbines.

Small modular reactors, or SMRs, generate between 70 and 350 megawatts of power. That's enough to light up hundreds of thousands of homes while producing zero emissions.

Twenty-two SMR designs are currently under development across the United States. Two designs from NuScale Power Corporation have already earned approval from the Nuclear Regulatory Commission, marking a significant milestone for the technology.

Data centers love SMRs for their compact size and steady energy output. Unlike solar and wind power that depend on weather, these reactors deliver electricity around the clock whenever it's needed.

"It's firm energy, it's available when you need it," says Patrick White, a fusion energy expert at the Clean Air Task Force. "It's clean energy, so we know that it's helping to meet our climate goals."

The timing couldn't be better. Environmental groups recently sued Elon Musk's xAI data centers in Mississippi and Tennessee for running 27 unpermitted gas turbines that allegedly violate the Clean Air Act.

SMRs offer a cleaner alternative by sitting right next to data centers and feeding power back to the electrical grid. This setup eliminates the need to build expensive new transmission lines across the countryside.

Canada is already moving forward with the technology. Ontario is constructing four SMRs at its Darlington Project, with the first reactor expected to generate power at $140 per megawatt hour and subsequent reactors dropping to around $80.

Why This Inspires

This shift represents more than just swapping one power source for another. It shows how industries can embrace cutting-edge clean technology to grow without compromising our air quality or climate goals.

The challenge now is patience. Regulatory approvals take multiple years, and scaling up production will require time and investment before SMRs become widely available.

But experts see enormous potential once the technology matures. These reactors prove that meeting America's growing energy needs doesn't have to mean choosing between progress and the planet.

The future of data centers looks bright, clean, and surprisingly compact.