Valar Atomics, a US company developing small, factory-built nuclear reactors, announced a $1bn Series B round led by Sequoia Capital in early August 2026. TechCrunch first reported the round on 3 August, according to Trending Topics, and the company's announcement and adviser statements followed on 4 August.
Apandion, Atreides Management, Conviction, Dream Ventures, HOF Capital, Point72, Riot Ventures, Snowpoint Ventures and Valor Equity Partners also invested, along with other new and existing backers. Sequoia partner Shaun Maguire joined Valar's board.
Separately, Valar secured a $200m credit facility led by Erebor Bank, as administrative agent, and J.P. Morgan, with Crescent Cove and Hercules Capital also lending. The company did not disclose a valuation; Bloomberg put it at $6bn, according to Trending Topics.
“It took two years to complete the NOVA core. It took seven months to take Ward 250 critical.”Isaiah Taylor, Founder and CEO, Valar Atomics
What Valar Atomics does
Valar builds small modular reactors intended to be produced in a factory and deployed as standardised power plants. Law firm Goodwin, which advised the company, described its focus as scaling nuclear energy for heavy industrial power and clean hydrocarbon fuel production.
The company's announcement, written by Isaiah Taylor, listed the milestones it has reached since it was started about three years earlier. Valar completed a non-nuclear prototype called Ward Zero, then reached cold criticality with its NOVA core at Los Alamos National Laboratory. The US Department of Energy selected it for both its Nuclear Reactor Pilot Program and its Advanced Nuclear Fuel Line Pilot Program.
On 18 June 2026 its Ward 250 reactor, at a site in Utah, reached self-sustaining criticality, which Valar said made it the first company to take a reactor critical outside a national laboratory. A week later the reactor generated electricity to power an NVIDIA Blackwell system in front of a live audience, and Valar announced a collaboration with NVIDIA on a waterless 30 MW AI factory.
What the money is for
Valar said the Series B marks a shift from demonstrating one integrated reactor to producing fleets of them. It plans to build a vertically integrated business, including fuel production in labs located alongside its reactors, which would reduce its reliance on outside suppliers as it deploys more units.
The company said it wants to scale manufacturing to tens of reactors a year, then hundreds and eventually thousands. It did not give a timeline for those targets or say where the factories would be built.
Taylor pointed to the pace of the company's recent work as the basis for that plan: the NOVA core took two years to complete, while Ward 250 reached criticality about seven months after the NOVA milestone.
The funding so far
Valar raised $130m in November 2025 from investors including Anduril founder Palmer Luckey and Palantir's Shyam Sankar, Bloomberg reported at the time. Bloomberg described the company then as based in Hawthorne, California.
The company has not published a total for the money it has raised, and it did not disclose its headcount. With the Series B and the credit facility combined, Valar lined up $1.2bn in new capital, according to Pulse 2.0.
Company website: valaratomics.com