{
  "language": "en",
  "interfaceLanguage": "ar",
  "url": "https://voltformer.com/ar/news/north-sea-offshore-wind-substations-he-dreiht-borkum-riffgrund",
  "slug": "north-sea-offshore-wind-substations-he-dreiht-borkum-riffgrund",
  "category": "renewable-integration",
  "publishDate": "2026-09-10",
  "sourceName": "TenneT TSO & EnBW",
  "sourceUrl": "https://www.tennet.eu",
  "readingTimeMinutes": 4,
  "tags": [
    "Offshore Wind",
    "Substations",
    "North Sea",
    "TenneT",
    "66 kV Array",
    "HVAC Interconnection"
  ],
  "content": {
    "title": "North Sea Offshore Transformer Platforms Energized for 960 MW He Dreiht and 913 MW Borkum Riffgrund 3",
    "summary": "Transmission system operator TenneT and developers energize major offshore substation platforms in the German North Sea, integrating nearly 1.9 GW of subsidy-free offshore wind power via 66 kV inter-array networks and high-voltage grid links.",
    "sections": [
      {
        "heading": "Commissioning 66 kV Array Substations for He Dreiht and Borkum Riffgrund 3",
        "paragraphs": [
          "Offshore transmission operator TenneT, alongside energy developers EnBW and Ørsted, has energized the offshore converter and transformer platforms servicing the 960 MW He Dreiht and 913 MW Borkum Riffgrund 3 offshore wind farms in the German Bight.",
          "The joint milestone connects approximately 1,873 MW of new clean generation capacity to the mainland extra-high-voltage transmission grid, delivering enough electricity to power over two million European households."
        ]
      },
      {
        "heading": "Direct Step-Up to EHV Transmission with Zero-Subsidy Generation Model",
        "paragraphs": [
          "Both offshore wind farms operate on a subsidy-free merchant model, relying on next-generation 15 MW wind turbine generators and direct 66 kV inter-array submarine cable topologies to optimize levelized cost of energy (LCOE).",
          "The offshore transformer substations house high-capacity 66/155 kV and 155/380 kV step-up power transformers, sulfur hexafluoride (SF6) gas-insulated switchgear, and advanced dynamic shunt reactors designed to neutralize cable charging currents along lengthy subsea export links."
        ]
      }
    ]
  },
  "companies": []
}