California-based nuclear startup Valar Atomics used its Ward 250 advanced reactor to power an NVIDIA Blackwell chip in a demonstration at its Utah site on Wednesday, briefly hosting a website. Output was very small, but this is the first time a next-generation reactor in the US has generated power for such equipment. The reactor reached criticality last month, marking the start of a self-sustaining fission reaction. Valar and NVIDIA said they have agreed to jointly explore developing nuclear-pow

California-based nuclear startup Valar Atomics used its Ward 250 advanced reactor to power an NVIDIA Blackwell chip in a demonstration at its Utah site on Wednesday, briefly hosting a website. Output was very small, but this is the first time a next-generation reactor in the US has generated power for such equipment. The reactor reached criticality last month, marking the start of a self-sustaining fission reaction. Valar and NVIDIA said they have agreed to jointly explore developing nuclear-powered AI systems. The advanced reactor sector remains early-stage and no advanced reactors are yet commercialized in the US.