Valar Atomics says its startup-built advanced reactor made power and directly powered an NVIDIA Blackwell chip, with its website hosted from the reactor.
Isaiah Taylor argues nuclear needs manufacturing-style iteration, saying Valar will build on equity rather than wait for debt because US venture capital underwrites technical risk well.
Taylor says Valar built its own reactor protection system for about 400,000 dollars after a vendor quoted 5m dollars and two and a half years, a cost gap that signals how slow incumbents have become.
Valar Atomics Wants to Mass-Produce Nuclear Reactors Like Cars
Valar Atomics argues that nuclear's problem is manufacturing and iteration speed, not physics. US reactor building stalled after the 1970s, and regulators want data that only a running plant can supply. By building simple, repeatable reactors and testing fast, Valar says it can push energy costs down, and demand will rise as they fall.
Takeaways
Nuclear needs manufacturing scale, not bespoke designs. Taylor contrasts design-heavy nuclear companies, which he likens to Lamborghinis, with Valar's Toyota Camry approach. The goal is simple, cheap, safe reactors built in the tens of thousands, so cost falls through repetition.
Tick rate measures nuclear progress. Tick rate is the time between atom splits. Valar's first split came two years and four months after its Delaware filing, and the next about seven months later. It aims to cut that to four months, then one, then minutes.
Regulators need data, so someone must run hardware. The deadlock is that regulators want data and data requires a running plant. A Department of Energy testing pathway sat unused for about forty years until an executive order helped get a reactor critical. Valar says it is the fifth new US nuclear device to make power since 2000.
Safety design targets consequence, not odds. Taylor says nuclear is already the safest energy source. Valar plans to scram the reactor and shut off all electrical and safety systems, to show natural circulation removes decay heat passively over about two days.
Building in-house cuts cost and time. A vendor quoted about 5m dollars and two and a half years for a reactor protection system. Valar built its own in six weeks for about 400,000 dollars. Taylor says the vendor then disparaged Valar to the industry.
Equity funds early builds, and a gigasite bets on demand. Valar will build on its equity balance sheet, expecting a fifth reactor before project finance and debt are options, since US venture capital underwrites technical risk well. A gigawatt-scale Utah site with Conviction bets that load follows cheap power.
Cheap energy creates its own demand. Taylor calls energy a commodity whose demand rises as price falls. He predicts fission will make it a thousand times cheaper, lowering the cost of travel and manufacturing until energy is the cost of all goods in an AI-automated economy.
How Valar built the Modular Citadel
The reactor needs a bioshield, with 78 inches of concrete in front of it.
The concrete team spent about three weeks collecting rock samples across the United States, then invented its own concrete.
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On this episode 3
Show 1
Blocks are precast and stack with no grout, bolts or rebar.
A Salt Lake City factory can make 3,000 identical blocks a year.
The stack went up in about 42 hours instead of three months.