Fact orig-070
(1) The Series B post says that 'just a week later' than the June 18 criticality, Ward 250 generated electricity to power an NVIDIA Blackwell. Valar's own Castle Country page and Deseret News date that event July 1, 2026, thirteen days after criticality (orig-013, orig-042), and TechCrunch, attributing it to the company, wrote that it happened in June. A small point, but the company's own pages disagree. (2) The post says its power will be generated in reactors with no burden on the water supply. The Trust Lands memo says the helium-cooled reactors need no cooling water (mine-017), which supports the reactor part; separately Valar is seeking up to 1,000 water shares in Emery County for future development (mine-042) and would have to buy water rights for its Carbon County campus (mine-017). The claim holds for reactor cooling; the wider campus needs water. (3) The post says Valar will not rely on outside suppliers for fuel and will make it in labs beside its reactors. So far, DOE's shipping review cleared HALEU fuel for Ward 250 to be shipped from Los Alamos's criticality center in Nevada (safe-010); DOE's fuel-line selection of Valar is conditional (orig-032); and no DOE authorization of the Valarin fuel line is public (safe-031). A plan, not the current practice. (4) 'Ward 250's operability has been proven': DOE confirmed criticality (orig-010); the power reached and the run history are not public (orig-013, safe-007).
- Announcing our $1B Series B Led By Sequoia (Isaiah Taylor) (Valar Atomics, 2026-08-04) primary company “Just a week later, Ward 250 set another record”
- Castle Country | Valar Atomics (Valar Atomics) primary company “on July 1 it generated electricity, live in front of an audience”
- Sequoia's Shaun Maguire leads $1B round for nuclear startup Valar Atomics (TechCrunch, 2026-08-03) news “In June, it demonstrated its Ward 250 reactor successfully powering an Nvidia Blackwell system”
- Announcing our $1B Series B Led By Sequoia (Isaiah Taylor) (Valar Atomics, 2026-08-04) primary company “generated in reactors with no burden on our water supply”
- Announcing our $1B Series B Led By Sequoia (Isaiah Taylor) (Valar Atomics, 2026-08-04) primary company “Valar will not rely on outside suppliers for the fuel needed to deploy and operate.”
- Safety Evaluation Report, Letter Amendment of Certificate of Compliance No. 9979 for the Model 9979 Package, Docket 26-35-9979 (U.S. Department of Energy, Packaging Certification Program, 2026-05-20) primary government “fuel compacts from the National Criticality Experiments Research Center in Nevada”