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General Information Name Walney Phase 1 Other names Country name United Kingdom Region England, North West Comments Cost is for the two sites (Walney 1 and 2) and excludes cost of connection to grid. The assessed transfer value of the Walney 1 project transmission assets is £105,411,350. Project uses the met mast at Cirrus Shell Flats Round (or category) Round 2 Development status Fully Commissioned Comments on the status Power & Turbines Notice any Errors? You can keep this an open resource by submitting corrections! Project Capacity 183.6 MW Turbine Model SWT-3.6-107 (Siemens) Turbine Capacity 3.6 MW Number of Turbines 51 Total Turbine Height 137 m Hub Height 83.50 m Rotor Diameter 107 m Foundation Grounded: Monopile Download Database for Excel 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) 500.00 Location & Environment Sea name Irish Sea (Irish Sea) Centre latitude 54.041° Centre longitude -3.514° Area 28 km2 Depth range (Chart Datum) 19 m - 23 m Depth range stated by developer 19 m - 28 m Distance From Shore (reported) 14 km Distance From Shore (computed from centre) 19.4 km Ports Installation base Barrow and Mostyn Ops and maintenance Barrow Grid Converter platforms None Offshore transformers Walney Phase 1 Substation Grid connection point Heysham Cable landing point Heysham 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 1 Average length per cable 43 km Transmission type (e.g. HVAC) HVAC Nominal voltage 132 kV Maximum voltage Power rating 192 MVA Number of cores 3 Conductor type Cu Section 630 mm2 Insulation XLPE Number fibre optics 48 Minimum bend radius (MBR) 3 m Burial depth 2 m Comments Diameter 209mm, non-coilable Onshore Cables (new) Number of onshore cables 3 Average length per cable 2.7 km Comments 3 single core, 132kV, 192MVA Array Cables Array cable length 46 km Estimated cable length In purchased database Transmission type (e.g. MVAC) MVAC Nominal voltage 33 kV Maximum voltage Burial depth 2 m Number of cores 3 Conductor type Cu Section 150/500 mm2 Insulation Power rating Number of fibre optics 40 Minimum bend radius (MBR) Comments ICC: 3 x 150 mm2, 33 kV + fibre optic cable (16 fibres). PCC: 3 x 500 mm2, 33 kV + fibre optic cable (24 fibres).  Benefits Homes powered annually 102660 CO2 reduced per year 207475 tonnes SO2 reduced per year 4825 tonnes Expected life 20.0 years Other Website Visit

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