Valar Atomics is a startup building small modular nuclear reactors to power AI data centers. Its Ward 250 reactor became the first privately built reactor outside a US national lab to reach criticality, and the company has raised $1 billion from investors including Sequoia Capital. This hub tracks Valar Atomics’ reactors, funding, and role in powering AI infrastructure.
Sequoia Capital led a $1 billion round for nuclear startup Valar Atomics, days after its Ward 250 reactor became the first outside a US national lab to reach criticality and power an Nvidia system.
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