functional
Hywind Scotland Pilot Park
30 MW Concept/Early Planning United Kingdom

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4C Offshore Ltd. has achieved certification to the ISO 9001, ISO 14001 and OHSAS 18001 standards for quality, environmental, and health & safety management.
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Developers/Owners/Operators
RoleOrganisation 
Developer
correct
Owner correct
Project Details for Hywind Scotland Pilot Park
General Information Name Hywind Scotland Pilot Park correct
Other names Hywind II, Hywind 2, Buchan Deep correct
Country name United Kingdom correct
Region Scotland, Grampion correct
Comments Statoil Wind Limited (SWL) has been awarded an Exclusivity Agreement by The Crown Estate (TCE) for the deployment of floating wind turbine gererator (WTG) units in an area known as the Buchan Deep which is an area of deep water (95 to 120 m) located approximately 25 km off the coast at Peterhead, north east Scotland just outside the 12 nm territorial water limit.

SWL is planning to deploy a small Pilot Park comprising five of the Hywind Units with a total maximum nameplate capacity of up to 30 MW. The Exclusivity Area is split into a northern and a southern part by the Forties to Cruden Bay pipelines which pass through the Exclusivity Area from north east to south west. The Pilot Park will be located either to the north or south of these pipelines. Electricity generated from the Pilot Park will be exported onshore to the local grid network via a new export cable to Peterhead.

The WTG Units are expected to have a hub (centre) height between 82 and 101 m above Mean Sea Level (MSL), with a draft of between 70 to 85 m and a rotor diameter of 120 to 154 m. The WTG Units will be positioned approximately 720 to 1,600 m apart. The WTG Units will be attached to the seabed by a three-point mooring spread. The anchor types currently under consideration are drag embedded (fluke or plate), torpedo, suction embedded plate anchors, suction anchors and gravity anchors. Three anchors (or possibly six – see section 2) will normally be required per WTG Unit. The mooring lines are likely to be composed of combinations of wire and chains and possibly synthetic fibre rope, and may include the use of clump weights and/or buoyancy elements. The radius of the mooring systems extending out from each of the WTG Units will be between 600 to 1,200 m. The WTG Units will be connected by inter-array cables which may require anchoring in some locations.

In addition to the proposed AfL Area and associated onshore and offshore infrastructure, the Hywind Scotland Pilot Park Project will use a deep water inshore area, the location of which is still to be determined, to assemble the

WTG Units prior to installation. Once assembled, the WTG Units will be towed in an upright position from the assembly point to the Buchan Deep.

The maximum life of the park is 25 Years.
correct
Round (or category) Demonstrator correct
Development status Concept/Early Planning correct
Comments on the status Locations off Lewis (Scotland), and Maine, USA were also considered. A former Norwegian option was exluded based on insufficient political will.

Project will probably require support of increased Scottish ROC for Floating Wind - according to Statoil this should be at 5 ROC/MWh. The number of ROCs was set to 3.5 ROC/MWh for floating demonstration projects.
correct
Power & Turbines Notice any Errors? You can keep this an open resource by submitting corrections!
Project Capacity 12 MW - 30 MW correct
Turbine Model Not Decided correct
Turbine Capacity 6 MW correct
Number of Turbines 5 correct
Total Turbine Height 176 m correct
Hub Height 101.00 m correct
Rotor Diameter 150 m correct
Foundation Floating: Spar Floater 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 correct
Location & Environment Sea name North Sea, Northern North Sea (Cromarty) correct
Centre latitude 57.445° (Note: Estimated/Illustrative Location) correct
Centre longitude -1.317° (Note: Estimated/Illustrative Location) correct
Area correct
Depth range (Chart Datum) correct
Depth range stated by developer 100 m - 120 m correct
Distance From Shore (reported) 20 km correct
Distance From Shore (computed from centre) correct
Ports Installation base Kishorn/Raasay Sound is the only area in the UK that can accommodate the 80m deep floating turbines. correct
Ops and maintenance correct
Grid Converter platforms None correct
Offshore transformers None correct
Grid connection point Peterhead Grange Substation correct
Cable landing point Peterhead 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 1 correct
Average length per cable 29.84 km correct
Transmission type (e.g. HVAC) AC correct
Nominal voltage 33 kV correct
Maximum voltage 36 kV correct
Power rating correct
Number of cores correct
Conductor type correct
Section Area correct
Insulation correct
Number fibre optics correct
Export minimum bend radius (MBR) correct
Burial depth correct
Comments The static part of the cable is likely to be buried. The base case is 33kV for the export and array cabling if coniditions allow 66kV will be used. Cable length and number of cables has been estimated where it is not yet decided by the developer. correct
Onshore Cables Number of onshore cables correct
Average length per cable correct
Comments correct
Array Cables Array cable length correct
Estimated cable length LogIn
Transmission type (e.g. MVAC) AC correct
Nominal voltage 33 kV correct
Maximum voltage 36 kV correct
Burial depth 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 Array cables are not expected to be buried. The base case is 33kV for the export and array cabling if coniditions allow 66kV will be used. correct
Benefits Homes powered annually 19570 correct
CO2 reduced per year 39551 tonnes correct
SO2 reduced per year 920 tonnes correct
Expected life correct
Other Website Visit correct