Valar Atomics launched nuclear reactor to power Nvidia chip for first time in USA

California nuclear startup Valar Atomics Inc. for the first time in U.S. history produced electricity using an advanced next-generation reactor and used it to power an AI chip from Nvidia Corp. — while the actual power generation was only a symbolic amount of current, reports Bloomberg.

What exactly happened

This is not about industrial power generation, but about a demonstration launch: a next-generation reactor for the first time in the U.S. produced electricity, and that electricity was directed to power a Nvidia chip used for artificial intelligence tasks. Bloomberg emphasizes that the volume of power generated was minimal — "just a trickle of electricity" — but the very fact that a reactor of this type worked for the first time on U.S. territory is considered a significant technological milestone for the industry.

• Company — Valar Atomics Inc., a nuclear startup from California
• Event — the first case in the U.S. of electricity generation by an advanced next-generation reactor
• The obtained energy was used to power an AI chip from Nvidia Corp.
• Generation volume — symbolic, operational scale not yet achieved

Why AI data centers need new nuclear energy

Training and operation of large language models requires enormous and constantly growing amounts of electricity, and existing power grids in many regions are already struggling to meet the demands of data centers housing clusters of chips like Nvidia. This is precisely why over the past few years several major technology companies have concluded agreements with nuclear plant operators and developers of compact next-generation reactors to provide AI data centers with reliable and low-carbon energy without full dependence on traditional grids.

Next-generation reactors — so-called advanced or small modular designs — are being developed as a more compact and, by the designers' intent, faster-to-build alternative to classical nuclear plants. Until recently, such projects largely existed at the stage of development, licensing, and testing, so actual physical startup and electricity generation, even if symbolic in scale, represents a notable step forward compared to purely paper and laboratory phases.

What this means

The symbolic-scale launch of Valar Atomics' reactor demonstrates the direction that energy for artificial intelligence might move: attempts to link promising nuclear technologies directly to specific computing equipment already at the earliest, demonstration stage, long before such reactors can cover any meaningful portion of data center energy consumption.