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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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Barrow Offshore Wind Farm

General Information

Official Name: Barrow
Alternative Name: BOW
Development Status: Commissioned
Area of Wind Farm: 10 km2
Number of Rows/Turbines: 2 x 7 turbines, 2 x 8 turbines
Distance Between Rows/Turbines: 750 m / 500 m, 750 m / 500 m
Location: Barrow-in-Furness
Region: Cumbria
Country: United Kingdom
Sea Name: Irish Sea
GPS Latitude: 53.9875
GPS Longitude: -3.2702
Distance From Shore: 7.5 km
Water Depth: 15-20 m
Generel Note: Round 1 site

Timeline & Track Records

Project Start: 2001 - Application submitted
Construction Start: 2005 (February) - Foundations
First Power Generation: 2006 (April)
Commission Year: 2006 (July)
Developer: Barrow Offshore Wind (BOW) - owned by DONG Energy (50%), Centrica Energy (50%)
Installer Turbines: MPI Offshore
Installer Substructure: MPI Offshore
Installer Inter-Array Cables: MPI Offshore
Global Marine Systems
Red7Marine
Installer Export Cables: MPI Offshore
Installer Offshore Substation: Bonn & Mees Drijvende Bokken
Operator: DONG Energy
TSO: National Grid
Total Project Cost: 143 mio €

Wind & Waves

Average Wind Speed: 9 m/s at 75 m

Production & Performance

Total Installed Capacity: 90 MW
Total Number of Turbines: 30
Annual Estimated Production: 302 GWh/year
Annual Production: 320.93 GWh in 2011

Show previous years

241.65 GWh in 2010
269.65 GWh in 2009
312.91 GWh in 2008
197.61 GWh in 2007
136.60 GWh in 2006
Capacity Factor: 40.69 % in 2011

Show previous years

30.65 % in 2010
34.20 % in 2009
39.69 % in 2008
25.06 % in 2007

Substations, Inter-Array & Export Cables

Transmission Type: MVAC / HVAC
Operating Voltage Level: 33 kV / 132 kV
Inter-Array Cable Type: Prysmian 33 kV XLPE / Prysmian 33 kV XLPE
Conductor Size: 3 x 120 mm2 / 3 x 300 mm2
Total Length: 25 km
Transformers: 120 MVA
Electrical Components Supplier: AREVA T&D - Now Alstom Grid
Support Structure Type: Monopile
Foundation Type: Piled
Offshore Structure Manufacturer: Smulders - Topside and monopile (the foundation was manufactured by a Sif/Smulders JV)
Sif Group - Monopile in a JV with Smulders
Offshore Structure Designer: Mott MacDonald - Topside
KBR - Monopile
Offshore Substation Description Length: 23 m. Width: 15 m. Height: 10 m. Weight: 440 t
Export Cable Type: Nexans 132 kV XLPE
Conductor Size: 3 x (Cu)
Total Length: 27.5 km
Total Weight: 1600 kg
Power Frequency: 50 Hz
Onshore Substation Location: Heysham, Cumbria (United Kingdom)
Onshore Substation Description: The submarine cable is extended at landfall by 2.8 km 3 x single core 132 kV land cable to connect the wind farm to the onshore substation

Turbine, Tower & Substructure

Turbine:  
Turbine Manufacturer: Vestas Wind Systems
Turbine Model: Vestas V90-3.0 MW
Number of Turbines: 30
Rated Power pr. Turbine: 3 MW
Estimated Watt pr. Rotor m2: 472 watt
Wind Class: IEC IA
Design Life: 20 years
Operational:  
Cut-in Wind Speed: 3.5 m/s
Rated Wind Speed: 15 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: 90 m
Rotor Area: 6362 m2
Rotor Speed (min): 8.6 rpm
Rotor Speed (rated): 16.1 rpm
Rotor Speed (max): 18.4 rpm
Rotor Weight (incl. hub): 39.8 t
Hub Height (above MSL): 75 m
Blade Tip Speed (rated): 75.87 m/s
Blade Tip Speed (max): 86.87 m/s
Blade Tip Height (above MSL): 120 m
Blade Length: 44 m
Blade Max Chord (max width): 3.5 m
Weight pr. Blade: 7 t
Power Regulation: Pitch regulated with variable speed (Hydraulic)
Nacelle:  
Drive Train Type: High speed
Gearbox Ratio: 1:104
Gearbox Stages: 2 planetary stages, 1 helical stage
Gearbox Lubrication: Forced oil lubrication
Generator Type: DFIG
Generator Rated Power: 3000 kW
Generator Number of Poles: 4 poles
Power Converter: Rotor
Power Converter Location: Nacelle
Power Frequency: 50 Hz
Turbine Voltage Level: 1000/400 V
Transformer Voltage Level: 33 kV
Transformer Location: Nacelle
Yaw Gears - Number: 6
Dimensions of Nacelle:  
Length: 9.65 m
Width: 3.85 m
Height: 4 m
Nacelle Weight: 91 t
Top Head Mass: 130.8 t
Tower:  
Structure Type: Tubular
Structure Material: Steel
Height: 75 m
Weight: 153 t
Substructure:  
Structure Type: Monopiles
Number of Support Structures: 30
Support Structure Material: Steel
Support Structure Description: Diameter: 4.75 m. Length: 49-61 m
Foundation Type: Piled
Substructure Manufacturer: Sif Group - Monopiles and transition pieces in a Sif/Smulders JV
Smulders - Monopiles and transition pieces in a Sif/Smulders JV
Substructure Designer: KBR

Resources

Website: Barrow Offshore Wind Farm
 
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