Sequoia Capital leads a $1 billion funding round for nuclear startup Valar Atomics, valuing the company at $6 billion, according to multiple reports. The round is described as a Series B, with Sequoia partner Shaun Maguire set to join Valar’s board. Other investors participating include Atreides Management, Point72, and Snowpoint Ventures. Sources also report that Valar’s valuation has roughly tripled to $6 billion from about $2 billion in a prior round conducted just months earlier.

Valar Atomics says the new capital supports a transition from demonstrating small nuclear reactors to producing them in volume. Bloomberg and the other outlets focus on the company’s stated manufacturing and scaling goal, while The Next Web adds details about the round’s size, participant names, board appointment, and the recent change in valuation. One outlet also notes that Valar has secured additional financing alongside the main round, but the specific amount is not fully consistent across the brief excerpts provided.