The UK Government has approved development of E.ON's Rampion offshore wind farm off the Sussex coast.
Expected to support more than 750 jobs and bring in more than £2bn of investment into the UK's economy, the wind farm will feature up to 175 turbines to be installed approximately 13km to 20km away from the coast.
UK Energy and Climate Change Secretary Ed Davey said: "We're driving investment in our energy security, and our plans have made us number one in the world for investment in offshore wind energy.
This project will provide Sussex county with green jobs and driving business opportunities right across the country, in a sector with a clear roadmap for long-term growth.
Onshore construction is due to commence in 2015, with the project planned to be completed in phases over the next four years.
E.ON Renewables chief operating officer Michael Lewis said: "This is a key milestone for the project and we firmly believe Rampion will play an important role in helping to ensure future security of supply and make a significant contribution towards meeting the UK's renewable energy targets."
Upon completion, the facility would generate enough electricity to power approximately 450,000 homes.
Rampion Wind Farm development manager Chris Tomlinson said: "The wind farm will not only help generate jobs during both construction and operation, but also provide a boost to the port regeneration at Newhaven and the local economy."
The Crown Estate offshore wind head Huub den Rooijen said: "Today's announcement for the Rampion wind farm is great news for the offshore wind industry and with nearly 12GW consented, including over 5GW in operation or under construction, this further reinforces why the UK remains one of the best places to invest in offshore wind globally."
Image: Rampion offshore wind farm will deliver enough electricity for about 450,000 homes. Photo: courtesy of xedos4 / FreeDigitalPhotos.net.