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X-energy

Xe-100 high-temperature gas-cooled pebble-bed SMR and TRISO fuel.

Rockville, MD, US · 2009
Milestone note Oct 21, 2026

Amazon is warehousing $5B of Nvidia racks it cannot power — and paying to develop 960 MW of reactors that do not exist yet

Business Insider reported that Amazon set up an "Early Rack Receipt" program to take about $5 billion of Nvidia GB300 racks into intermediate warehouses because several AWS sites lack the utility capacity to switch them on; Amazon calls it routine staging. The same week Amazon, AEP and X-energy agreed to study twelve Xe-100 reactors, 960 MW, at a retired Indiana coal plant. X-energy has not yet built a reactor.

Milestone note Jun 2026

First US reactor cleared via streamlined environmental review

Reached

X-energy / US NRC — The NRC issued a Finding of No Significant Impact for X-energy's plan to build four 80 MWe Xe-100 reactors at Dow's Seadrift site on the Texas Gulf Coast — the first commercial nuclear project in the NRC's 52-year history cleared through a streamlined environmental assessment rather than a full environmental impact statement. The Amazon-backed developer still faces the separate safety review next.