Role in Prometheus
Not yet publicly detailed.
Commitments
| Tier | Consortium member |
| Category | Reactor developer |
| Board seat | — |
| Capital committed | — |
| In-kind | — |
| Ticker | — |
Assets brought to the program
- Mark-0 demonstration microreactor (first advanced-reactor criticality under the DOE Reactor Pilot Program, 2026-06-04 at INL)
Notes
Factory-produced fission microreactor developer. Active Prometheus contributor per its own statement (2026-07-22); specific in-program role not officially detailed — likely microreactor design/manufacturing data and the Mark-0 as a test/demonstration asset. Company profile: $470M Series C (2026-07-27), Army Janus agreement at Fort Bragg (2026-08-26), Nuclear Energy Launch Pad selection (2026-08-28), TRISO supply agreement with Standard Nuclear (2026-08-27).
Milestone log
- 2026-07-22 — Publicly acknowledged its Prometheus contribution: 'Antares is proud to contribute to Prometheus' (LinkedIn) (source)
- 2026-08-27 — Announced multi-year TRISO fuel supply agreement with consortium member Standard Nuclear — first disclosed supply-chain link between two Prometheus members (source)