|London Array off-shore wind farm|
The London Array under construction in 2009.
|Country||England, United Kingdom|
|Location||7 miles (11 km) off North Foreland, Kent|
|Construction began||March 2011|
|Commission date||October 2012|
|Construction cost||£1.8 billion (€2.2 billion)|
|Owner(s)||DONG Energy (50%)
E.ON UK Renewables (30%)
|Developer(s)||London Array Limited|
|Turbines||341 × 3.6 MW|
|Manufacturer(s)||Siemens Wind Power|
|Distance from shore||7 mi (11.3 km)|
|Installed capacity||630 MW|
|Maximum capacity||1,000 MW|
|As of April 2013|
The London Array is an off-shore wind farm in the Thames Estuary in the United Kingdom. With a nameplate capacity of 1,000 megawatts (MW), it is the world's largest offshore wind farm.1 The site is more than 20 kilometres (12 mi)2 off the North Foreland on the Kent coast in the area of Long Sand and Kentish Knock, between Margate in Kent and Clacton in Essex. The first foundation was installed in March 20113 and phase I, consisting of 175 turbines delivering a capacity of 630 MW, was confirmed fully operational on 8 April 2013.4 It was formally inaugurated by the British prime minister David Cameron on 4 July 2013.5 The wind farm is named the London Array because it supplies electric power to parts of Greater London.
The wind farm is located more than 20 kilometres (12 mi) from the Kent and Essex coasts in the outer Thames Estuary. The first phase consists of 1756 SWT-3.6 turbines and two offshore substations, giving a wind farm with a peak rated power of 630 MW.7 The turbines and offshore substations are each erected on a monopile, and connected together by 210 kilometres (130 mi) of 33 kV array cables. The two offshore substations are connected to an onshore substation at Cleve Hill (near Graveney) on the north Kent coast, by four 150 kV subsea export cables, in total 220 kilometres (140 mi).8 The smaller Thanet Wind Farm is to the south of it.
Turbines were supplied by Siemens Wind Power.7 Their foundations were built by the joint-venture between Per Aarsleff and Bilfinger Berger Ingenieurbau. The same company supplied and installed the monopiles.8 Generators were installed by MPI and A2SEA by using an installation vessel TIV MPI Adventure and a jack-up barge Sea Worker.9 Two offshore substations were designed, fabricated and installed by Future Energy, a joint venture between Fabricom, Iemants and Geosea, while electrical systems and onshore substation work was undertaken by Siemens Transmission & Distribution. The subsea export cable was supplied by Nexans and array cables by JDR Cable Systems. The array cables and the export cables were installed by VSMC.8
Ownership is 50% DONG Energy, 30% E.ON UK Renewables and 20% Masdar.10 The wind farm was planned to be built by London Array Limited, a consortium of Shell WindEnergy, E.ON UK Renewables and DONG Energy.11 In May 2008, Shell announced that it was pulling out of the project.12 It was announced in July 2008 that E.ON UK and DONG Energy would buy Shell's stake.13 Subsequently on 16 October 2008, London Array announced the Abu Dhabi based Masdar would join E.ON as a joint venture party in the scheme. Under the agreement, Masdar purchased 40% of E.ON's half share of the scheme, giving Masdar a 20% stake in the project overall.14
In March 2009, the backers agreed on an initial investment of €2.2 billion.15 Offshore work was due to start in February 2011 and the proposed completion date for the first stage is in 2012. The second stage (bringing the revised total to 217 turbines) will add enough capacity to generate 1,000 MW.1416
This offshore wind farm will reduce annual CO2 emissions by approximately 900,000 tons, which equal the emissions of 300,000 passenger cars.18 The second phase of the array has been scaled back after concerns were raised by the Royal Society for the Protection of Birds about its effect on a local population of red-throated divers.1920
- Wind power in the United Kingdom
- List of offshore wind farms in the United Kingdom
- List of offshore wind farms
- List of offshore wind farms in the North Sea
- "London Array official site". www.londonarray.com. 22 February 1999. Retrieved 6 July 2013.
- Eyre, Edward Crosthwaite (16 November 2010). Preliminary Information Memorandum: London Array (Phase 1) Offshore Transmission Assets. UK OFGEM. p. 3. Retrieved 19 April 2013.
- London Array site First foundation March 2011
- "Hip Hip Array-World's largest offshore wind farm goes fully operational" (Press release). RenewableUK. 8 April 2013. Retrieved 19 April 2013.
- "London Array, world's largest offshore wind farm, inaugurated" (Press release). gulfnews.com. 4 July 2013. Retrieved 4 July 2013.
- Nathan, Stuart (25 June 2012). "The Big Project: London Array". The Engineer. Retrieved 19 December 2012.
- "Siemens to provide 175 wind turbines for the world's largest offshore wind farm London Array" (Press release). Siemens AG. 19 May 2009. Retrieved 14 July 2010.
- "Trio hand out London Array prizes". Upstream Online (NHST Media Group). Retrieved 1 January 2010.
- "London Array signs final major installation contracts for phase one" (Press release). London Array. 4 February 2010. Retrieved 14 July 2010.
- Jensen, Mette Buck. DONG borrows GBP 250mio • Ingeniøren • ing.dk, 9 June 2010. Retrieved: 9 June 2010.
- "London Array project introduction". www.londonarray.com. 22 February 1999. Retrieved 6 July 2013.
- Shell pulls out of key wind power project, Financial Times, 1 May 2008
- "E.ON and DONG Energy become 50:50 partners in world's largest offshore wind farm" (Press release). The London Array. Retrieved 16 August 2008.
- "E.ON and Masdar have joined forces as partners in the London Array offshore wind farm project" (PDF) (Press release). The London Array. Retrieved 16 October 2008.
- David Teather, "Thames offshore wind farm gets green light from investors", The Guardian, 13 May 2009
- "UK's London Array Given Green Light". www.renewableenergyworld.com. 12 May 2009. Retrieved 6 July 2013.
- Bradbury, John (5 November 2012). "First power from London Array". Offshore.no • International (Offshore Media Group). Retrieved 5 November 2012.
- London Array Offshore Windfarm Inaugurated (retrieved 7 July 2013)
- The London Array: the world's largest offshore wind farm (retrieved 7 July 2013)
- English Channel projects worth 3.3GW face bird colony challenge (retrieved 7 July 2013)