{
  "url": "https://openlegislation.uk/hornsea-one-offshore-wind-farm-order-2014/schedule-9/part-2/paragraph-5",
  "json_url": "https://openlegislation.uk/hornsea-one-offshore-wind-farm-order-2014/schedule-9/part-2/paragraph-5.json",
  "legislation": "uksi/2014/3331",
  "legislation_title": "The Hornsea One Offshore Wind Farm Order 2014",
  "legislation_url": "https://openlegislation.uk/hornsea-one-offshore-wind-farm-order-2014",
  "path": "schedule/9/part/2/paragraph/5",
  "kind": "paragraph",
  "number": "5",
  "heading": "Design parameters",
  "text": "(1) The licence-holder must in fixing to the seabed any structures comprised in Work No. 2 use one of the following methods—\n(a) monopile foundations;\n(b) jacket foundations supported by piles; or\n(c) gravity base foundations.\n(2) The following parameters apply in respect of the foundation methods used to fix wind turbine generators comprised in Work No. 2 to the seabed—\n(a) where monopile foundations are used—\n(i) the area occupied by the foundations and the scour protection for each individual structure must not exceed 1,419 m2;\n(ii) the diameter of each foundation must not exceed 8.5 metres;\n(b) where jacket foundations (driven/drilled piles) are used—\n(i) the area occupied by the foundations and the scour protection for each individual structure must not exceed 707 m2 per wind turbine;\n(ii) the number of piles per jacket must not exceed four;\n(iii) the diameter of each pile must not exceed three metres;\n(c) where jacket foundations (suction piles) are used—\n(i) the area occupied by the foundations and scour protection for each individual structure must not exceed 6,362 m2;\n(ii) the number of piles per jacket must not exceed four;\n(iii) the diameter of each pile must not exceed 15 metres;\n(d) where gravity base foundations are used—\n(i) the area occupied by the foundations and the scour protection for each individual structure must not exceed 6,362 m2;\n(ii) the seabed levelling diameter must not exceed 70 metres;\n(iii) the cone diameter must not exceed 50 metres at its base.\n(3) The following parameters apply in respect of the foundation methods used to fix any offshore accommodation platform comprised in Work No. 2 to the seabed—\n(a) where monopile foundations are used—\n(i) the area occupied by the foundations and the scour protection for each individual structure must not exceed 1,419 m2;\n(ii) the diameter of each foundation must not exceed 8.5 metres;\n(b) where jacket foundations (driven/drilled piles) are used—\n(i) the area occupied by the foundations and the scour protection for each individual structure must not exceed 1,414 m2;\n(ii) the number of piles must not exceed eight;\n(iii) the diameter of each pile must not exceed three metres;\n(c) where jacket foundations (suction piles) are used—\n(i) the area occupied by the foundations and the scour protection for each individual structure must not exceed 6,362 m2;\n(ii) the number of piles per jacket must not exceed eight;\n(iii) the diameter of each pile must not exceed 15 metres;\n(d) where gravity base foundations are used—\n(i) the area occupied by the foundations and the scour protection for each individual structure must not exceed 6,362 m2;\n(ii) the seabed levelling diameter must not exceed 70 metres;\n(iii) the cone diameter must not exceed 50 metres at its base.\n(4) The combined total volume of scour protection for the wind turbine generators and the offshore accommodation platform forming part of Work No. 2 must not exceed 1,079,839 m3 or, if no part of Work No.3 is constructed, must not exceed 1,613,093 m3.\n(5) In the event that no offshore accommodation platform is constructed under this licence, the combined total volume of scour protection for the wind turbine generators forming part of Work No. 2 must not exceed 1,066,508 m3 or, if no part of Work No.3 is constructed, must not exceed 1,599,762 m3.",
  "extent": "E+W+S",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "I",
      "label": "I1",
      "text": "Sch. 9 para. 5 in force at 31.12.2014, see art. 1"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/2014/3331/schedule/9/part/2/paragraph/5",
    "retrieved_at": "2026-10-28T23:53:19.221455+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}