{
  "id": "onkalo",
  "slug": "onkalo",
  "name": "Onkalo",
  "stage": "repository",
  "company_id": "posiva",
  "country_iso3": "FIN",
  "lat": 61.235,
  "lon": 21.48,
  "capacity_value": null,
  "capacity_unit": "tHM total",
  "capacity_year": null,
  "capacity_note": "Licensed for roughly 6,500 tU of spent fuel over its operating life.",
  "output_value": null,
  "output_unit": null,
  "output_tu": null,
  "output_year": null,
  "status": "construction",
  "commissioned": "2026",
  "notes": "The first deep geological repository for spent nuclear fuel anywhere, 400 metres down in Olkiluoto granite, using copper canisters in bentonite clay. Construction is complete and the encapsulation plant has been tested with dummy fuel; it awaits an operating licence, with emplacement expected to begin in 2026. Sweden's Forsmark repository, using the same KBS-3 method, is the second to start construction.\n",
  "source_name": "Posiva Oy",
  "source_url": "https://www.posiva.fi/en/index.html",
  "source_ref": null,
  "company_name": "Posiva Oy",
  "company_slug": "posiva",
  "url": "https://nuclearchain.net/facilities/onkalo/",
  "license": "CC BY 4.0",
  "attribution": "NuclearChain (nuclearchain.net)"
}