The Upstarts Podcast Valar Atomics’ Isaiah Taylor: Solving AI’s Energy Crisis With Nuclear ‘Gigasites’
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Feb 26, 2026 
Isaiah Taylor, founder and CEO of Valar Atomics building small modular reactors and multi-reactor 'gigasites'. He explains why small, manufacturable reactors and rapid hardware iteration matter. He ties massive AI and reindustrialization power needs to the urgency for cheap, scalable nuclear. He recounts fundraising, testing, and the race with China and Russia.
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Small Simple Reactors Enable Mass Manufacturing
- Valor prioritizes making reactors small, simple, and manufacturable because smaller reactors are geometrically safer and easier to mass-produce.
- They then scale site power by adding many units rather than one huge reactor.
GigaSite Is A Continuous Nuclear Canvas
- The gigasite concept treats a nuclear site as a continuous canvas where many small reactors are produced and added to reach gigawatts of capacity.
- Isaiah compares it to a Gigafactory aiming for sites in the tens of gigawatts, larger than most existing plants.
AI And Reindustrialization Drive Nuclear Demand
- Two key demand drivers for Valor are AI's sudden massive power needs and a U.S. re-industrialization wave.
- Cheap, abundant nuclear power would unlock data centers and energy-intensive manufacturing onshore.