{
  "id": "G100000500414",
  "slug": "pickering-nuclear-power-plant-a1",
  "url": "https://nuclearchain.net/reactors/pickering-nuclear-power-plant-a1/",
  "name": "Pickering nuclear power plant A1",
  "unit_no": "A1",
  "status": "retired",
  "status_raw": "operating",
  "status_inferred": false,
  "site": {
    "slug": "pickering-nuclear-power-plant",
    "name": "Pickering nuclear power plant",
    "url": "https://nuclearchain.net/plants/pickering-nuclear-power-plant/"
  },
  "country": {
    "iso3": "CAN",
    "name": "Canada"
  },
  "reactor_type": "phwr",
  "reactor_type_raw": "pressurized heavy water reactor",
  "size_class": "large",
  "model": "CANDU 500A",
  "nsss_vendor": "atkinsrealis",
  "capacity": {
    "gross_mw": 542,
    "net_mw": 515,
    "design_net_mw": 508,
    "thermal_mw": 1744
  },
  "timeline": {
    "construction_start": "1966-06-01",
    "first_criticality": "1971-02-25",
    "grid_connection": "1971-04-04",
    "commercial_operation": "1971-07-29",
    "permanent_shutdown": "2024-10-01",
    "planned_retirement_year": null,
    "cancellation_year": null
  },
  "location": {
    "lat": 43.8107,
    "lon": -79.0689,
    "accuracy": "exact"
  },
  "data_center_ppa": false,
  "ownership": [
    {
      "company": "Ontario Power Generation",
      "pct": null,
      "role": "operator"
    },
    {
      "company": "Ontario Power Generation Inc",
      "pct": 100,
      "role": "owner"
    }
  ],
  "corrections": [
    {
      "field": "status",
      "old_value": "operating",
      "new_value": "retired",
      "reason": "Permanently shut down on 1 October 2024 ahead of the Pickering B refurbishment programme, after the GNPT record was last researched in May 2024.",
      "source_name": "IAEA Power Reactor Information System, reactor record PICKERING-1",
      "source_url": "https://pris-stats.iaea.org/",
      "verified_at": "2026-09-06"
    },
    {
      "field": "permanent_shutdown",
      "old_value": null,
      "new_value": "2024-10-01",
      "reason": "Permanently shut down on 1 October 2024 ahead of the Pickering B refurbishment programme, after the GNPT record was last researched in May 2024.",
      "source_name": "IAEA Power Reactor Information System, reactor record PICKERING-1",
      "source_url": "https://pris-stats.iaea.org/",
      "verified_at": "2026-09-06"
    },
    {
      "field": "retirement_year",
      "old_value": null,
      "new_value": "2024",
      "reason": "Permanently shut down on 1 October 2024 ahead of the Pickering B refurbishment programme, after the GNPT record was last researched in May 2024.",
      "source_name": "IAEA Power Reactor Information System, reactor record PICKERING-1",
      "source_url": "https://pris-stats.iaea.org/",
      "verified_at": "2026-09-06"
    }
  ],
  "provenance": {
    "base_source": "Global Nuclear Power Tracker, Global Energy Monitor, August 2026 release",
    "base_source_url": "https://globalenergymonitor.org/projects/global-nuclear-power-tracker/",
    "license": "CC BY 4.0",
    "date_last_researched": "2024-05-09",
    "note": "date_last_researched is when Global Energy Monitor last reviewed this specific unit, which may be well before the release date."
  }
}