{
  "slug": "hermes",
  "name": "Hermes",
  "company_id": "kairos",
  "coolant": "Fluoride salt",
  "reactor_type": "htgr",
  "output_mwe": null,
  "thermal_mw": 35,
  "fuel_type": "TRISO pebbles",
  "enrichment_class": "HALEU",
  "enrichment_pct": "Up to 19.75% U-235",
  "regulator": "US NRC",
  "application_type": "Construction permit (non-power reactor)",
  "application_date": "2021-09",
  "review_phase": "Under construction",
  "decision_expected": null,
  "credibility_tier": "under_construction",
  "docket": "NRC Docket 50-7513",
  "first_site_name": "Oak Ridge, Tennessee",
  "first_site_country": "USA",
  "offtakers": null,
  "model_match": null,
  "transportable": 0,
  "form_factor": null,
  "what_if": null,
  "notes": "The first US construction permit issued for a non-light-water reactor, granted December 2023. Hermes is a demonstration unit, not a power reactor — it produces heat, not electricity — but it is the first new reactor technology to clear NRC construction licensing in decades.\n",
  "source_name": "US Nuclear Regulatory Commission",
  "source_url": "https://www.nrc.gov/reactors/non-power/new-facility-licensing/hermes-kairos.html",
  "url": "https://nuclearchain.net/smr/hermes/",
  "license": "CC BY 4.0",
  "attribution": "NuclearChain (nuclearchain.net)"
}