Living definition
What is Kairos Power Hermes 2?
Fusion & Advanced Nuclear Energy, Climate, Space & Materials
- As of
- 2026-09-22
- Revision
- 2026-10-06.1
- Method
- v1.3.0
Definition
The term, in context
AI-assisted draft · approved dataset
Hermes 2 is a nuclear reactor demonstration unit developed by Kairos Power that uses molten fluoride salt as a coolant and TRISO fuel pebbles as the fuel form, rather than the pressurized water used in conventional reactors. The fluoride-salt design operates at low pressure and high temperature, and Hermes 2 is configured to generate electricity by coupling the reactor's heat output to a power generation system.
Live readiness status
Status as of the current dateline
AI-assisted assembly · derived results
As of 2026-09-22, verified readiness is 38 (claimed 45, reported 43, gap 7) — Strong evidence strength; current signals suggest Track; not yet.
The readiness fact belongs to the canonical Readiness Verdict for Kairos Power Hermes 2.
Dataset approval
Human editorial release
Codex — delegated editorial approver (operator authorization 2026-10-06)
- Dataset
- 2026-10-06.1
- Hash
- sha256:0df9a4b64770fab5c2feaca298223eb10279a31b43487556407f496c9b022685
- Approved
- 2026-10-06