Nuclear's Toyota moment: Isaiah Taylor on making energy 10x cheaper through hardware iteration

Key takeaways from No Priors interview with Valar Atomics founder and CEO Isaiah TaylorDealroom has a profile for this one. Try Dealroom → (July 2026), filmed at the company's Utah nuclear facility:

• First startup ever to make nuclear power: Valar's W-250 reactor is the first advanced reactor to make power built by a startup, the first advanced reactor built outside a national laboratory, and the fifth new nuclear device to make power in the US since 2000. Taylor says Valar is the only private company founded since the discovery of fission to ever make nuclear power.
• A hardware problem, not a design problem: Taylor divides the industry into companies that treat nuclear as a design/modelling-and-simulation exercise (producing 'paper reactors') and those that treat it as hardware execution. Valar is firmly in the latter camp — 'we don't want to make Lamborghinis, we want to make a very simple, very cheap, very safe reactor' at Toyota Camry scale.
• Tick rate is the core metric: Borrowed from video games, 'tick rate' measures the time between splitting atoms. Valar went from Delaware incorporation to first atom split in 2 years 4 months, then just ~7 months to the second reactor — with the stated goal of eventually turning on a new reactor 'every few minutes'.
• Built under a Trump executive order: The W-250 went critical under EO 14301, which called for three advanced reactors to go critical on US soil by July 4th — built via Department of Energy testing authority rather than the slower NRC commercial pathway, breaking nuclear's regulatory 'chicken-and-egg' data problem.
• Safety by consequence, not just odds: Valar's TRISO-fuelled, graphite-moderated, helium-cooled design is engineered so that even with every system failed, the public isn't dosed with radiation. On Friday the team planned to scram the reactor and cut all power to demonstrate passive cooling with no moving parts — removing decay heat over two days purely through geometry.
• Powered an Nvidia chip and a live website: Valar connected an Nvidia Blackwell system directly to the reactor — the first AI chip powered by a nuclear reactor — and hosted nuclearbite.com on it, showing how many uranium atoms were split to serve each page. The site (and Valar merch) is only available while the reactor is running.
• Radical verticalisation is the 'secret weapon': Valar invented its own grade of gamma-blocking, rebar-free concrete (found via a three-week nationwide 'rock hunt' by two engineers aged 23 and 21) and stacks its modular 'Citadel' bioshield in ~42 hours versus a typical 3 months, using sine-wave 'tortuous path' seams and no grout or fasteners.
• Energy demand is set by price: Taylor argues energy is a commodity whose demand is induced by cost — make it cheaper (1 cent, then a tenth of a cent) and you create your own demand — giving Valar what he calls a fundamentally infinite market beyond today's AI compute tailwinds.

Source: No Priors — July 2026.