Inner Dowsing
97.2 MW Fully Commissioned United Kingdom

"The 4C database is much more comprehensive than we expected – it is easily accessible, updated regularly and contains a wealth of relevant up to date information. This has been a very good investment for us and we recommend it as a must for the Wind Farm Vessel Supply Chain."

David Symon, Humber Work Boats Ltd

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Developers/Owners/Operators
RoleOrganisation 
Developer correct
Operator correct
Operator-Offshore Transmission correct
Owner correct
Owner correct
Owner correct
Owner-Offshore Transmission correct
Project Details for Inner Dowsing
General Information Name Inner Dowsing correct
Other names correct
Country name United Kingdom correct
Region England, East Midlands correct
Comments The cost for both Lynn and Inner Dowsing Projects is "at least 300m GBP". The Oct 2009 equity sale and project finance round values the project at GBP460m in aggregate, or, if split pro-rata by MW, 230m GBP for each of Lynn and Inner Dowsing. correct
Round (or category) Round 1 correct
Development status Fully Commissioned correct
Comments on the status correct
Power & Turbines Notice any Errors? You can keep this an open resource by submitting corrections!
Project Capacity 97.2 MW correct
Turbine Model SWT-3.6-107 (Siemens) correct
Turbine Capacity 3.6 MW correct
Number of Turbines 27 correct
Total Turbine Height 133.5 m correct
Hub Height 80.00 m correct
Rotor Diameter 107 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) 150.00 correct
Location & Environment Sea name North Sea, Southern North Sea (Humber) correct
Centre latitude 53.191° correct
Centre longitude 0.446° correct
Area 10 km2 correct
Depth range (Chart Datum) 6 m - 8 m correct
Depth range stated by developer 6 m - 18 m correct
Distance From Shore (reported) 5 km correct
Distance From Shore (computed from centre) 6.2 km correct
Ports Installation base Skegness, Esbjerg (pre-assembly) correct
Ops and maintenance Grimsby correct
Grid Converter platforms None correct
Offshore transformers None correct
Grid connection point Middlemarsh, Skegness correct
Cable landing point Skegness, Lincolnshire 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 3 correct
Average length per cable 6.6 km correct
Transmission type (e.g. HVAC) MVAC correct
Nominal voltage 33 kV correct
Maximum voltage 36 kV correct
Power rating correct
Number of cores 3 correct
Conductor type Cu correct
Section Area correct
Insulation XLPE correct
Number fibre optics correct
Export minimum bend radius (MBR) correct
Burial depth 2 m correct
Comments correct
Onshore Cables Number of onshore cables correct
Average length per cable 5 km correct
Comments 33kV correct
Array Cables Array cable length 16 km correct
Estimated cable length LogIn
Transmission type (e.g. MVAC) MVAC correct
Nominal voltage 33 kV correct
Maximum voltage 36 kV correct
Burial depth correct
Number of cores 3 correct
Conductor type Cu correct
Section correct
Insulation XLPE correct
Power rating correct
Number of fibre optics correct
Minimum bend radius (MBR) correct
Comments correct
Benefits Homes powered annually 63407 correct
CO2 reduced per year 128147 tonnes correct
SO2 reduced per year 2980 tonnes correct
Expected life 25.0 years correct
Other Website Visit correct
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