{
  "language": "en",
  "interfaceLanguage": "en",
  "url": "https://voltformer.com/news/opg-secures-500kv-interconnection-darlington-smr-nuclear-october-2026",
  "slug": "opg-secures-500kv-interconnection-darlington-smr-nuclear-october-2026",
  "category": "transmission-substations",
  "publishDate": "2026-10-01",
  "sourceName": "Ontario Power Generation Media",
  "sourceUrl": "https://www.opg.com/news/darlington-smr-500kv-grid-connection-approval-october-2026",
  "readingTimeMinutes": 1,
  "tags": [
    "Canada",
    "OPG",
    "Nuclear Power",
    "500 kV",
    "Ontario"
  ],
  "content": {
    "title": "OPG Secures 500 kV Grid Interconnection Approval for Darlington SMR Nuclear Station",
    "summary": "Ontario Power Generation (OPG) has secured regulatory interconnection approval to connect its 300 MW small modular reactor at Darlington directly into the provincial 500 kV bulk transmission system.",
    "sections": [
      {
        "heading": "Small Modular Reactor Interconnection Design",
        "paragraphs": [
          "The approved transmission interconnection incorporates a dedicated 500 kV switchyard bay equipped with SF6 gas-insulated circuit breaker arrangements.",
          "A 350 MVA generator step-up transformer will elevate terminal voltage from 20 kV to 500 kV for feeding clean baseload power into the Greater Toronto grid."
        ]
      },
      {
        "heading": "Baseload Reliability and Grid Stability",
        "paragraphs": [
          "The 300 MW BWRX-300 unit will produce baseload electricity capable of powering 300000 homes continuously without carbon emissions.",
          "High-reliability digital protection systems with fiber-optic differential relays guarantee transmission isolation within 35 ms in the event of an external network fault."
        ]
      }
    ]
  },
  "companies": []
}