The London Array is an offshore wind farm in the Thames Estuary in the United Kingdom. With a nameplate capacity of 630 megawatts (MW), it is the world’s largest offshore wind farm. The first foundation was installed in March 2011 and phase I, consisting of 175 turbines delivering a capacity of 630 MW, was confirmed fully operational on 8 April 2013. The wind farm is named the London Array because it supplies electric power to parts of Greater London. [source]

The wind farm has an offshore area of about 100 km2 (38.6 sq miles) and can generate enough power for nearly half a million UK homes a year. CO2 savings are estimated at 925,000 tonnes a year.