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Installed Capacity: - MW
Annual Production: - GW
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Offshore Wind Statistics

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Commissioned Sites by Developer/Owner

Operator Sites
DONG Energy 13
Vattenfall 7
E.ON 4

Comissioned Sites by turbine manufacturer

Turbine Manufacturer Sites
Siemens Wind Power 17
Vestas Wind Systems 16.83
Bonus Energy 4.83

Installed Capacity by Country

Country MW %
United Kingdom 3,309.2 63.76
Denmark 871.45 16.79
Netherlands 246.8 4.76

Installed Capacity by commissioned site

Site MW
London Array 1 630
Greater Gabbard 504
Sheringham Shoal 316.8

Installed Capacity by Operator

Operator MW %
DONG Energy 1,793.25 34.55
Vattenfall 830.9 16.01
SSE Renewables 514 9.9

Installed Capacity & Number of Turbines by turbine manufacturer

Manufacturer
Model
 MW %
Siemens Wind Power
Siemens SWT-3.6-107
Siemens SWT-3.6-120
Siemens SWT-2.3-93
Siemens SWT-2.3-101
Siemens SWT-2.3-82 VS
3,003.9
1,551.6
824.4
575
50.6
2.3
57.88
29.9
15.88
11.08
0.97
0.04
Vestas Wind Systems
Vestas V90-3.0 MW
Vestas V80-2.0 MW
Vestas V39-500 kW
Vestas V66-2.0 MW
Vestas V47-660 kW
1,393.32
957
426
5
4
1.32
26.85
18.44
8.21
0.1
0.08
0.03
Bonus Energy
Bonus 2.3 MW/82
Bonus 2.0 MW/76
Bonus 450 kW/37
245.05
200.1
40
4.95
4.72
3.86
0.77
0.1
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Sakata Offshore Wind Farm

General Information

Official Name: Sakata
Development Status: Commissioned
Location: Sakata
Region: Yamagata
Country: Japan
Sea Name: Japan Sea
GPS Latitude: 38.9671
GPS Longitude: 139.8220
Distance From Shore: 0.2 km
Water Depth: 2-4 m
Generel Note: Sakata consists of 5 offshore and 3 onshore turbines

Timeline & Track Records

Commission Year: 2004 (January)
Developer: Summit Wind Power
Operator: Summit Wind Power
TSO: Tohoku Electric Power

Production & Performance

Total Installed Capacity: 16 MW
Total Number of Turbines: 8
Annual Estimated Production: 40 GWh/year

Turbine, Tower & Substructure

Turbine:  
Turbine Manufacturer: Vestas Wind Systems
Turbine Model: Vestas V80-2.0 MW
Number of Turbines: 8
Rated Power pr. Turbine: 2 MW
Estimated Watt pr. Rotor m2: 398 watt
Wind Class: IEC IA
Operational:  
Cut-in Wind Speed: 4 m/s
Rated Wind Speed: 16 m/s
Cut-out Wind Speed: 25 m/s
Operational Temperature: -30°C to 40°C
Rotor & Hub:  
Rotor Type: 3-bladed, horisontal axis
Rotor Position: Upwind
Rotor Diameter: 80 m
Rotor Area: 5027 m2
Rotor Speed (min): 10.8 rpm
Rotor Speed (rated): 16.7 rpm
Rotor Speed (max): 19.1 rpm
Rotor Weight (incl. hub): 37 t
Hub Height (above MSL): 60 m
Blade Tip Speed (rated): 69.95 m/s
Blade Tip Speed (max): 80.01 m/s
Blade Tip Height (above MSL): 100 m
Blade Length: 39 m
Blade Max Chord (max width): 3.5 m
Weight pr. Blade: 6 t
Power Regulation: Pitch regulated with variable speed (hydraulic)
Nacelle:  
Drive Train Type: High speed
Gearbox Ratio: 1:100.5
Gearbox Stages: 2 planetary stages, 1 helical stage
Gearbox Lubrication: Forced oil lubricaton
Generator Type: DFIG
Generator Rated Power: 2000 kW
Generator Number of Poles: 4 poles
Power Converter: Rotor
Power Frequency: 50 Hz
Turbine Voltage Level: 690/480 V
Yaw Gears - Number: 4
Dimensions of Nacelle:  
Length: 10.4 m
Width: 3.4 m
Height: 5.4 m
Nacelle Weight: 78 t
Top Head Mass: 115 t
Tower:  
Structure Type: Tubular
Structure Material: Steel
Weight: 120 t
Substructure:  
Structure Type: Other Piled
Number of Support Structures: 8
Support Structure Material: Concrete
Support Structure Description: Each foundation is a concrete platform placed on 8 steel piles
Foundation Type: Piled

Resources

Website: Sakata Offshore Wind Farm
 
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