26 Oct 2021: Update 26th Oct: The Crown Estate is currently conducting the Round 4 Plan-Level Habitats Regulations Assessment (HRA). The multi-stage HRA process begins with an initial screening process to determine the Likely Significant Effects of the Round 4 plan on the UK national site network. A detailed technical assessment known as an Appropriate Assessment is then carried out. If it concludes that the plan will not have ‘adverse effect on site integrity’ (AEOI) The Crown Estate may grant seabed rights (an ‘Agreement for Lease’). Otherwise the HRA will examine alternative areas. The Crown Estate may consider making use of the derogation process in extreme circumstances. Update 9th February 2021: Preparations for the plan-level Habitats Regulations Assessment (HRA) are now underway. Update 15th October 2020: Once bidding cycles are concluded the Plan-Level Habitats Regulations Assessment (HRA) stage will commence. Estimated to take between 9 and 12 months, this assessment will be undertaken by The Crown Estate, in its role as a Competent Authority, and will consider the possible impacts of Round 4 on relevant nature conservation sites of European importance. Hence the HRA process has been pushed back. Update 1/10/19: Plan-level HRA Autumn 2020 – Summer 2021 In accordance with The Crown Estate's role as a Competent Authority under the Habitats Regulations, it will undertake a PlanLevel Habitats Regulations Assessment (HRA) to assess the possible impact of the awarded projects on relevant nature conservation sites of European importance. The plan-level HRA for Round 4 is expected to take approximately nine months, starting in summer 2020.
United Kingdom
Concept/Early Planning
480 MW
4C Offshore | Location Map: Lat(53.800) Lon(-3.607)

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Power & Turbines
Windfarm Capacity
480 MW
Turbine Model
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Other Turbine(s) Used
Min. Turbine Capacity (MW)
Max. Turbine Capacity (MW)
Min. Number of Turbines
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Max. Number of Turbines
Total Turbine Height
Hub Height
Rotor Diameter
Foundation Type
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Foundations on Wind Farm
Foundation Comments

Location & Environment
Sea Name
Irish Sea
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Depth Range (Chart Datum)
Depth Range (Stated by Developer)
Distance from Shore (Developer)
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Distance from Shore (Computed)

Installation Base
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Ops and Maintenance
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Number of Offshore Platform(s)
Shared Platform Type
Grid Connection Point
Cable Landing Point

Export Cables (AC & DC)
Number of Export Cables (AC)
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Average Length per Cable (AC)
Additional Requirements (AC)
Nominal Voltage (AC)
Number of Export Cables (DC)
Average Length per Cable (DC)
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Additional Requirements (DC)
Nominal Voltage (DC)

Nominal Voltage

Onshore Cables
Number of Onshore Cables
Average Length per Cable
Expected Life