Greater Gabbard
504 MW Fully Commissioned United Kingdom

"The team at 4C Offshore offer an excellent service - The team are very approachable and deal with any queries quickly and efficiently"

Barry Stolp, Marketing Manager IHC Hydrohammer

Latest Windfarm News
UK offshore windfarm deploys lidar to monitor air flows
The installers say the ZephIR wind data provides an opportunity to enhance the energy assessment and revenue forecasting, which is an essential part of design refinement and the overall business case for the offshore windfarm project. Stephen Kerr, Inch ...
02/10/2014 00:06:18

India plans first offshore wind power project
Energy Live News - Energy Made Easy
The Indian Government has signed an agreement with a group of companies to build the nation's first ever offshore wind power project. The 100MW wind farm will be located off the coast of Gujarat and be partly-financed by state subsidies, the Ministry of New ...
01/10/2014 23:33:07

India eyes first offshore wind farm
Business Green
India currently has 22GW of onshore wind power but so far no offshore wind farms. However, Prime Minister Narendra Modi has said he wants to boost the use of renewable energy to help improve energy security and has already announced major plans for a ...
01/10/2014 23:16:35

India To Build Its First Offshore Wind Farm
Law360 (subscription)
Law360, New York (October 01, 2014, 6:56 PM ET) -- India signed a memorandum of understanding with a consortium of developers that will build the country's first ever offshore wind power plant within the prime minister's home state of Gujarat, India's press ...
01/10/2014 23:01:07

Masdar Abu Dhabi Future Energy Co. to buy half of Statoil's shares in Dudgeon ...
eNewsWire (press release)
It has recently been announced by that Masdar (Abu Dhabi Future Energy Co.) will buy half of Statoil's shares in Dudgeon offshore wind farm. In June, Statoil, in collaboration with Statkraft, decided to build the offshore wind park, Dudgeon, off the ...
01/10/2014 14:20:33

Iberdola launches offshore pile testing campaign for wikinger project
Your Renewable News (press release)
The Wikinger offshore wind farm is being developed by IBERDROLA, off the coast of the island of Rügen where the water depths range between 37 and 43 metres. The project covers an area of roughly 34km², within which 70 turbines and one offshore ...
01/10/2014 14:58:15

New wind energy system wins approval in Scotland
Hydrogen Fuel News
Scotland has a major interest in wind energy. The country is currently home to some of the most ambitious offshore wind projects that are taking form and these projects could have a major impact on the country's energy structure. Despite recent political issues ...
01/10/2014 14:01:54

Lighting Up Wind Farms with Lidar
Pollution Solutions
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 ...
01/10/2014 11:34:18

Smaller-Scale Wind Power Silently Spins Ahead
ecoRI news
By TIM FAULKNER/ecoRI News staff. Wind energy is not popular. Divisive utility-scale wind projects in Falmouth, Fairhaven and Portsmouth, R.I., as well as the protracted fights and acrimony caused by offshore wind farms Cape Wind and Deepwater Wind, ...
01/10/2014 11:57:51

Objections to wind turbines not strong enough
Bournemouth Echo
THE objections presented by MPs, elected Councillors and citizens of the area is the strongest and most extensively argued, on all points, of any offshore wind farm in the UK. Approval by Planning Inspectorate Assessment Team would mean that none of the ...
01/10/2014 07:12:19

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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Developer correct
Operator correct
Owner correct
Owner correct
Owner-Offshore Transmission
Greater Gabbard OFTO plc
Project Details for Greater Gabbard
General Information Name Greater Gabbard correct
Other names GGOWL correct
Country name United Kingdom correct
Region England, East of England correct
Comments Project CAPEX cost derived from Fluor's end of year financial reports: 2008 saw an initial project cost of $1.8 billion, charges were then added to Fluor's accounts in 2010 ($343m), 2011 ($60m) and 2012 ($416m). Values were adjusted according to inflation and converted to GBP, bringing the April 2013 estimated CAPEX cost at around £1.883 billion.

The total estimated value of the Greater Gabbard Transmission Assets is £323,666,658 including financing and transaction costs (22nd November 2013); included in this value are the offshore substation, cables, onshore substation, connection costs, development, transaction costs and interest during construction.
Round (or category) Round 2 correct
Development status Fully Commissioned correct
Comments on the status See events table for latest status correct
Power & Turbines Notice any Errors? You can keep this an open resource by submitting corrections!
Project Capacity 504 MW correct
Turbine Model SWT-3.6-107 (Siemens) correct
Turbine Capacity 3.6 MW correct
Number of Turbines 140 correct
Total Turbine Height 131 m correct
Hub Height 77.50 m correct
Rotor Diameter 107 m correct
Foundation Grounded: Monopile 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 USD(mill) 2619.00 correct
Location & Environment Sea name North Sea, Southern North Sea (Thames) correct
Centre latitude 51.883° correct
Centre longitude 1.935° correct
Area 146 km2 correct
Depth range (Chart Datum) 4 m - 37 m correct
Depth range stated by developer 20 m - 32 m correct
Distance From Shore (reported) 36 km correct
Distance From Shore (computed from centre) 32.5 km correct
Ports Installation base Harwich / Verbrugge Zeeland correct
Ops and maintenance Lowestoft correct
Grid Converter platforms None correct
Offshore transformers Greater Gabbard - Galloper Array Substation, Greater Gabbard - Inner Gabbard Substation correct
Grid connection point Leiston 132kV Substation correct
Cable landing point Sizewell 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 3 correct
Average length per cable 45.5 km correct
Transmission type (e.g. HVAC) HVAC correct
Nominal voltage 132 kV correct
Maximum voltage correct
Power rating correct
Number of cores 3 correct
Conductor type Cu correct
Section Area 800 mm2 correct
Insulation XLPE correct
Number fibre optics 48 correct
Export minimum bend radius (MBR) correct
Burial depth at least 1 m correct
Comments correct
Onshore Cables Number of onshore cables 3 correct
Average length per cable 0.59 km correct
Comments 132kV, 3 core cables correct
Array Cables Array cable length 173 km correct
Estimated cable length LogIn
Transmission type (e.g. MVAC) MVAC correct
Nominal voltage 33 kV correct
Maximum voltage 36 kV correct
Burial depth 1 m correct
Number of cores 3 correct
Conductor type Cu correct
Section 240 mm2 correct
Insulation XLPE correct
Power rating 50 MVA correct
Number of fibre optics correct
Minimum bend radius (MBR) correct
Comments With 48 Single Mode 9/125/245µm fibres. Class 2 stranded conductors with longitudinal water blocking; Semi conductive extruded conductor screen; Semi-conductive core screen; Copper tape metallic screen. Armour package comprising single layer galvanised steel wire. 4.2mm Polyethylene outer sheath. correct
Benefits Homes powered annually 328780 correct
CO2 reduced per year 664464 tonnes correct
SO2 reduced per year 15453 tonnes correct
Expected life correct
Other Website Visit correct