Tunø Knob
5 MW Fully Commissioned Denmark

"The database has become an invaluable tool with regard to business planning and the regular updates from the 4C Offshore team on the project specifics ensure that, as a tier 1 supplier, we remain well informed and able to react to market developments."

Darren Taylor, NKT Cables

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Latest Windfarm News
Optimal timing of wind farm repowering: a two-factor real options analysis
Risk.net
For more than twenty years now, wind power has been one of the main renewable energy sources. Whereas offshore wind utilization still has a high risk profile, the repowering of wind converters offers an interesting alternative to further increase the use of ...
Source: news.google.com
30/09/2014 14:44:29

Curtailment solutions boost confidence in China
Windpower Monthly (subscription)
In a written notice dated 5 June, the NEA put forward its first programme for an offshore wind-power grid feed-in tariff (FIT). The document put FIT rates, which will be for offshore wind at CNY 0.85/kWh ($0.136/kWh) and for intertidal installations at CNY ...
Source: news.google.com
30/09/2014 14:43:50

DONG Energy's 258 MW Extension To Burbo Bank Wind Farm Given Go Ahead
CleanTechnica
The proposed 258 MW extension to the Burbo Bank offshore wind farm that was recently put forward by developer DONG Energy has been given the go ahead by authorities, according to recent reports. Once completed, that will increase the total capacity of ...
Source: news.google.com
30/09/2014 11:03:55

Swire Blue Ocean A/S signs key contract for provision of installation vessel ...
PortNews IAA
Projects in 2014 include the completion of the foundation installation campaign by Pacific Orca for Borkum Riffgrund 1 for Dong Energy and the installation of wind turbine generators on Dan Tysk Offshore Windfarm by Pacific Osprey for Vattenfall, amongst ...
Source: news.google.com
30/09/2014 10:05:05

Inch Cape Offshore Limited Lights Up Wind Farm with ZephIR Lidar, Supported ...
DigitalJournal.com
ZephIR 300 has been mounted on a platform on the north east of the lighthouse using a specially designed support frame measuring wind direction and wind velocity and will augment wind measurements from onshore sources and from a dedicated offshore ...
Source: news.google.com
29/09/2014 16:16:54

Merseyside offshore wind farm given green light
PlanningResource (subscription)
The Burbo Bank Extension offshore wind farm, north-west of the Wirral coastline, covers an area of up to 40 sq km and has an estimated generating capacity of up to 250MW. It includes up to 69 turbines with a maximum height of 223 metres, alongside ...
Source: news.google.com
29/09/2014 12:32:39

Use The FORCE: Cost Of Offshore Wind Energy Really Could Drop 40%
CleanTechnica
That dovetails precisely with what CleanTechnica heard about the falling cost of offshore wind energy at the WindEnergy Hamburg 2014 trade fair last week, which came in at around 30–40%. So, what is DNV GL and why is it so confident that the cost of ...
Source: news.google.com
29/09/2014 12:29:14

Green field: Graduate opportunities in renewable energy
The Engineer
There are now 648 wind projects in operation with a total of 4,525 onshore turbines with a capacity of 7,448MW and 1,075 offshore turbines with a capacity of 3,653MW. That includes the world's largest wind farm, the 630MW London Array in the outer Thames ...
Source: news.google.com
29/09/2014 11:14:17

North Coates Flying Club may be forced to close if wind farm compounds go ahead
Grimsby Telegraph
CAMPAIGNERS insist changes to plans to build works compounds for an offshore wind farm don't go far enough to lift the threat of closure hanging over their airfield. As reported, North Coates Airfield could be forced to close if renewables firm SMart Wind ...
Source: news.google.com
29/09/2014 08:34:59

Dong Energy secures UK approval for extension of Burbo Bank offshore wind farm
Energy Business Review
Dong Energy has secured development consent from the UK Department for Energy and Climate Change for the 250MW extension to Burbo Bank offshore wind farm. offshore wind farm. Located in the Liverpool Bay, north west of the Wirral coastline, the ...
Source: news.google.com
29/09/2014 07:31:34




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
Project Details for Tunø Knob
General Information Name Tunø Knob correct
Other names correct
Country name Denmark correct
Region Odder correct
Comments correct
Round (or category) 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 5 MW correct
Turbine Model V39-500kW (Vestas) correct
Turbine Capacity 0.5 MW correct
Number of Turbines 10 correct
Total Turbine Height 64.5 m correct
Hub Height 45.00 m correct
Rotor Diameter 39 m correct
Foundation Grounded: Gravity-Base 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) 9.75 correct
Location & Environment Sea name Kattegat correct
Centre latitude 55.968° correct
Centre longitude 10.355° correct
Area 0 km2 correct
Depth range (Chart Datum) 4 m - 7 m correct
Depth range stated by developer correct
Distance From Shore (reported) 5.5 km correct
Distance From Shore (computed from centre) 5.5 km correct
Ports Installation base correct
Ops and maintenance correct
Grid Converter platforms None correct
Offshore transformers None correct
Grid connection point correct
Cable landing point 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 6.04 km correct
Transmission type (e.g. HVAC) MVAC correct
Nominal voltage 12 kV correct
Maximum voltage correct
Power rating correct
Number of cores 3 correct
Conductor type correct
Section Area 150 mm2 correct
Insulation correct
Number fibre optics correct
Export minimum bend radius (MBR) correct
Burial depth 22 m correct
Comments 20.4kg/m, 123.2Ton correct
Onshore Cables Number of onshore cables correct
Average length per cable correct
Comments correct
Array Cables Array cable length 2.81 km correct
Estimated cable length LogIn
Transmission type (e.g. MVAC) MVAC correct
Nominal voltage 12 kV correct
Maximum voltage correct
Burial depth 4 m correct
Number of cores 3 correct
Conductor type correct
Section 150 mm2 correct
Insulation correct
Power rating correct
Number of fibre optics correct
Minimum bend radius (MBR) correct
Comments 20.4kg/m, 57.4Ton correct
Benefits Homes powered annually 3262 correct
CO2 reduced per year 6592 tonnes correct
SO2 reduced per year 153 tonnes correct
Expected life correct
Other Website Visit correct
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