West of Duddon Sands
389 MW Partial Generation/Under Construction United Kingdom

"The database has become an invaluable tool with regard to business planning and the regular updates from the 4C Offshore team on the project specifics ensure that, as a tier 1 supplier, we remain well informed and able to react to market developments."

Darren Taylor, NKT Cables

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Developers/Owners/Operators
Project Details for West of Duddon Sands
General Information Name West of Duddon Sands correct
Other names West Duddon correct
Country name United Kingdom correct
Region England, North West correct
Comments The turbine capacity is reduced from the original 500MW due to siting issues (Geology).

Project used the Met mast at Cirrus Shell Flats
correct
Round (or category) Round 2 correct
Development status Partial Generation/Under Construction correct
Comments on the status correct
Power & Turbines Notice any Errors? You can keep this an open resource by submitting corrections!
Project Capacity 389 MW correct
Turbine Model SWT-3.6-120 (Siemens) correct
Turbine Capacity 3.6 MW correct
Number of Turbines 108 correct
Total Turbine Height correct
Hub Height correct
Rotor Diameter 120 m correct
Foundation Grounded: Monopile correct
Windspeed 10 Year Mean Wind Speed (2000-2009) Available online now
Detailed wind speed data 6 hr/day/month historic data
Costs Stated Project Cost GBP(mill) 1600.00 correct
Location & Environment Sea name Irish Sea (Irish Sea) correct
Centre latitude 53.984° correct
Centre longitude -3.464° correct
Area 67 km2 correct
Depth range (Chart Datum) 17 m - 21 m correct
Depth range stated by developer 17 m - 24 m correct
Distance From Shore (reported) 15 km correct
Distance From Shore (computed from centre) 20.1 km correct
Ports Installation base Belfast, Barrow (construction facility) correct
Ops and maintenance Barrow correct
Grid Converter platforms None correct
Offshore transformers West of Duddon Sands Offshore Substation correct
Grid connection point Heysham correct
Cable landing point Heysham correct
Export Cables
Please note that export cables connect the offshore transformer (substation) to either; shore or an offshore HVAC-HVDC converter station for onward transmission via HVDC cabling. Please see the converters page for planned converter stations and transmission cables.

The export cable length does not generally include the onshore component. The exception is when the onshore substation is close to shore.
Number of Export Cables 2 correct
Average length per cable 41 km correct
Transmission type (e.g. HVAC) HVAC correct
Nominal voltage 155 kV correct
Maximum voltage 170 kV correct
Power rating correct
Number of cores 3 correct
Conductor type Cu correct
Section Area 1000 mm2 correct
Insulation correct
Number fibre optics correct
Export minimum bend radius (MBR) correct
Burial depth 1-2m m correct
Comments correct
Onshore Cables Number of onshore cables 6 correct
Average length per cable 3 km correct
Comments 2 x 3 phase correct
Array Cables Array cable length 107 km correct
Estimated cable length LogIn
Transmission type (e.g. MVAC) MVAC correct
Nominal voltage 33 kV correct
Maximum voltage correct
Burial depth 1 m correct
Number of cores correct
Conductor type correct
Section correct
Insulation correct
Power rating correct
Number of fibre optics correct
Minimum bend radius (MBR) correct
Comments correct
Benefits Homes powered annually 253760 correct
CO2 reduced per year 512850 tonnes correct
SO2 reduced per year 11927 tonnes correct
Expected life correct
Other Website Visit correct