Antares Mark-0 Microreactor

A dated reading of what is claimed, reported, and independently verified in the current evidence.

Current reading

Readiness band and full integer triple

AI-assisted assembly · derived results

Readiness band

Emerging

Primary summary from verified readiness

Evidence strength Growing

Decision

Agent-assisted assessment · independently reviewed · 2026-10-02

Treat Mark-0 as an experimental milestone; defer power-use commitments until a successor demonstrates sustained electricity generation.

Why: Mark-0 demonstrated a sustained chain reaction at essentially zero energy output. Its configuration lacks heat-removal and power-conversion systems, so it cannot establish readiness to supply electricity. [INL](https://inl.gov/feature-story/america-built-nuclear-power-in-idaho-first-now-its-doing-it-again/), [ANS](https://www.ans.org/news/2026-06-05/article-8099/antares-achieves-zeropower-criticality-at-inl/).
Next: For electricity deployment, require independently documented sustained full-power operation, performance and safety results, and applicable site approvals for the specific successor configuration.

Constraints

Mark-0 lacks the heat-removal and power-conversion systems needed to deliver electricity.
Zero-power criticality does not establish sustained full-power safety, durability or operating economics.
Power deployment depends on validating and approving a distinct electricity-producing successor.

Evidence summary

AI-assisted assembly

Counts and dates only. Raw signals, private excerpts, trust records, and internal corpus material are not published here.

Publication record

Revision 5