Valar Atomics Powers Nvidia Chip With First Advanced US Reactor Electricity as 3 Startups Hit July 4 Goal
Updated
Updated · WIRED · Jul 3
Valar Atomics Powers Nvidia Chip With First Advanced US Reactor Electricity as 3 Startups Hit July 4 Goal
3 articles · Updated · WIRED · Jul 3
Summary
Valar Atomics said its reactor briefly generated electricity for an Nvidia chip, marking the first advanced US reactor to produce power rather than only sustain a chain reaction.
Three startups in the Energy Department pilot program reached criticality by Trump's July 4 deadline after regulatory cuts and support from federal labs accelerated testing.
Valar first reached criticality late last year at Los Alamos and again this month in Utah, while Antares Nuclear and Deployable Energy also met the target; Aalo expects to follow soon.
Commercial deployment remains distant because these are still test reactors, and companies must clear Nuclear Regulatory Commission licensing and secure fuel and supply chains.
Investors and tech companies see small reactors as 24/7 carbon-free power for AI data centers, but analysts warn nuclear plants still face high costs and frequent overruns.
Can micro-nuclear reactors be deployed fast enough to solve the AI industry's looming power crisis before it stalls innovation?
Is the quest for nuclear-powered AI creating a new strategic dependency on foreign supply chains for critical fuel?
With public opposition to data centers high, can pairing them with nuclear power win over skeptical local communities?
The Nuclear-Powered AI Revolution: Inside the Ward 250 Microreactor Breakthrough and Its First Live Demonstration
Overview
Valar Atomics' Ward 250 is a high-temperature gas-cooled microreactor that marks a major advance in nuclear energy technology. Building on the successful testing of Ward Zero, a full-scale non-nuclear prototype, Ward 250 was designed for efficient and reliable power with a strong foundation in proven thermal performance. Its standout feature is a remarkably low environmental footprint, especially near-zero annual water usage, making it ideal for modern applications like AI data centers. This innovative design not only supports sustainable energy needs but also demonstrates how careful development and validation can lead to practical, scalable solutions for the future.