Valar Atomics has raised a $1 billion Series B led by Sequoia Capital to move its nuclear reactor platform from demonstration into mass production.
The company also secured a $200 million credit facility led by Erebor Bank, alongside J.P. Morgan, Crescent Cove and Hercules Capital. Sequoia partner Shaun Maguire will join Valar Atomics’ board.
Other investors in the equity round included Apandion Capital, Atreides Management, Conviction, Dream Ventures, HOF Capital, Point72, Riot Ventures, Snowpoint Ventures and Valor Equity Partners. The transaction reportedly values the company at $6 billion, although Valar did not confirm that figure in its announcement.
Founded by Isaiah Taylor, Valar Atomics is developing standardized nuclear reactors intended for repeat manufacturing rather than one-off construction projects.
Its Ward 250 reactor has completed a criticality demonstration, giving the company an operating foundation as it prepares to produce fleets of reactors. Valar is targeting customers that need continuous power, including AI data centers, advanced manufacturing and industrial facilities.
The new funding will support manufacturing infrastructure, supply-chain commitments and the transition from prototype development to repeatable reactor production.
Valar’s larger ambition is to apply manufacturing economics to nuclear energy. Instead of designing each power project separately, the company plans to build standardized reactors through large production campuses.
That places Valar Atomics within growing investment around nuclear power for AI infrastructure, small modular reactor development and deeptech energy funding.
The company must now prove that its reactor design can move through regulation, fuel supply, construction and commercial deployment while maintaining the cost and speed advantages promised by factory production.