TerraPower’s nuclear reactor has a secret weapon for powering AI data centers

Nuclear power startups are positioning themselves as solutions to the high energy demands of AI data centers by providing power that runs constantly. TerraPower's advantage over competitors is an energy storage system using molten sodium that allows its reactor to quickly adjust power output to match fluctuating data center demand without slowing down the reactor itself. Most nuclear reactors struggle with rapid power adjustments and operate inefficiently at reduced capacity, but TerraPower's design keeps the reactor running at full capacity while storing excess heat for quick release when needed, similar to how renewable sources like wind and solar require flexible power matching. This approach allows the company to maximize the operational hours of expensive nuclear equipment while meeting the variable electricity demands of AI data centers.