{
  "url": "https://openlegislation.uk/hirwaun-generating-station-order-2015/schedule-1",
  "json_url": "https://openlegislation.uk/hirwaun-generating-station-order-2015/schedule-1.json",
  "legislation": "uksi/2015/1574",
  "legislation_title": "The Hirwaun Generating Station Order 2015",
  "legislation_url": "https://openlegislation.uk/hirwaun-generating-station-order-2015",
  "path": "schedule/1",
  "kind": "schedule",
  "number": "1",
  "heading": "AUTHORISED DEVELOPMENT",
  "text": "In the County Borough of Rhondda Cynon Taf—\nA nationally significant infrastructure project as defined in sections 14(1)(a) and 15 of the 2008 Act consisting of a generating station with a gross rated electrical output of up to 299MWe comprising—\nNumbered work 1 development comprising the demolition of all existing buildings and structures, including foundations, hardstanding and services,\nNumbered work 2A development comprising—\n(a)up to 5 gas turbine generators; and\n(b)up to 5 exhaust gas emission flue stacks,\nNumbered work 2B development comprising—\n(a)an administration building;\n(b)a store;\n(c)a control room/office/workshop;\n(d)telemetry apparatus;\n(e) three black start diesel generators where one gas turbine generator is constructed and one black start diesel generator where two, three, four or five gas turbine generators are constructed;\n(f)a natural gas receiving station and gas treatment compound containing—\n(i)a pipeline inspection gauge (PIG) receiving facility;\n(ii)isolation valves, metering, heating, filtering, compression, pressure regulation equipment;\n(iii)electricity supply kiosk; and\n(iv)control and instrumentation kiosks,\n(g) external fin fan cooler (where only one gas turbine generator is constructed).\nNumbered work 2C development comprising a switchyard / banking compound containing up to eight transformers, switchgear building and other plant required to manage the transmission of electricity,\nNumbered work 2D development comprising a construction and maintenance compound including new hardstanding,\nNumbered work 2E development comprising—\n(a)security infrastructure, including cameras, perimeter fencing and a gatehouse;\n(b)site lighting infrastructure, including perimeter lighting columns;\n(c)internal roadways, car parking, pedestrian network, cycle parking, hardstanding and water treatment trailers;\n(d)site drainage, attenuation pond and waste management infrastructure;\n(e)electricity, water, wastewater and telecommunications and other services;\n(f)a raw / fire water tank and demineralised water storage tank;\n(g)landscaping including tree planting, fencing and other boundary treatments and ecological mitigation (including bat mitigation structure);\n(h)tree and hedge removal;\n(i)high voltage and low voltage cabling, equipment and controls and associated telemetry and electrical protection auxiliary cabling;\n(j)underground gas pipeline connection, associated telemetry and cathodic protection test / transformer rectifier unit; and\n(k)other ancillary equipment,\nNumbered work 2F development comprising new or modified permanent means of access to numbered work 2 including permanent road surface, drainage, gates and fencing,\nNumbered work 2G development comprising the maintenance strengthening or re-laying in a new location of the existing culvert forming that part of ordinary watercourse River Camnant within the Order limits, such works subject to maintaining the existing flow rate.",
  "extent": "E+W+S",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Words in Sch. 1 substituted (12.11.2016) by The Hirwaun Generating Station (Amendment) Order 2016 (S.I. 2016/1087), arts. 1, 5(2)"
    },
    {
      "type": "F",
      "label": "F2",
      "text": "Words in Sch. 1 inserted (12.11.2016) by The Hirwaun Generating Station (Amendment) Order 2016 (S.I. 2016/1087), arts. 1, 5(3)"
    },
    {
      "type": "I",
      "label": "I1",
      "text": "Sch. 1 in force at 14.8.2015, see art. 1"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/2015/1574/schedule/1",
    "retrieved_at": "2026-10-28T23:33:17.400512+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."
}