Consortium membership is confirmed by the INL partner list, but this organization's Prometheus role has not been publicly detailed. Fields marked "—" are pending the weekly update pass.
Role in Prometheus
Not yet publicly detailed.
Commitments
| Tier | Consortium member |
| Category | Reactor developer |
| Board seat | — |
| Capital committed | — |
| In-kind | — |
| Ticker | — |
Notes
2026-09-24 verification: company materials confirm HTGR/gigasite and Ward-250 work, but no Prometheus-specific role disclosure; role remains null and confidence low. Vertically integrated HTGR developer (Ward 250; test reactor hosted at Utah San Rafael Energy Lab; criticality under DOE Reactor Pilot Program per WNN; powered an NVIDIA Blackwell chip in a reported US-first demo; 30 MW waterless 'AI factory' collaboration with NVIDIA reported 2026-07). Prior raise lead now resolved: the $1B Sequoia-led Series B (plus $200M credit facility) was confirmed on the company's docs page, announced 2026-08-04. Prometheus-specific role still not public; role remains null and confidence remains low.
Milestone log
- 2026-08-04 — Closed a $1 billion Series B led by Sequoia Capital (Sequoia partner Shaun Maguire joins the board), joined by Apandion, Atreides, Conviction, Dream Ventures, HOF Capital, Point72, Riot Ventures, Snowpoint, Valor Equity and others, plus a $200M credit facility led by Erebor Bank — financing aimed at manufacturing of standardized nuclear plants (source)
Sources
- https://inl.gov/artificial-intelligence/prometheus/
- https://www.valaratomics.com
- https://energylab.utah.gov/nuclear-energy/valar-atomics/
- https://www.valaratomics.com/docs/Announcing-our-1B-Series-B-Led-By-Sequoia
- https://www.world-nuclear-news.org/articles/valar-atomics-achieves-criticality-in-doe-reactor-pilot-program