Valar Atomics Runs Nvidia Blackwell Chip on Its Ward 250 Reactor

*A California startup produced the first electricity from a next-generation nuclear reactor to drive an Nvidia AI chip inside the United States.*

Valar Atomics connected its Ward 250 reactor to an Nvidia Blackwell chip at the company’s Utah site and generated a small amount of power. The demonstration marks the initial time an advanced reactor has supplied electricity to such a chip on US soil.

The startup, based in California, describes the output as a trickle. The test nevertheless showed that the reactor could feed the chip without drawing from the grid.

Bloomberg Technology covered the event on 2 July 2026 and interviewed Valar Atomics CEO Isaiah Taylor about the demonstration.

No other companies or regulators have released statements on the test. The single data point leaves open questions about scale, cost, and licensing timelines.

Why it matters

AI training clusters already strain local grids and push operators toward behind-the-meter generation. A working reactor-to-chip link, however small, gives one concrete example of how dedicated nuclear capacity could bypass transmission limits. Whether the approach proves economic at data-center scale remains untested, yet the hardware connection itself removes one layer of speculation.

The next required steps are higher output, sustained runtime, and regulatory approval for commercial deployment. Until those milestones appear, the Utah run stands as an engineering checkpoint rather than a production solution.

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Sources:

• Bloomberg Technology

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