A renewable energy consortium comprising Dong Energy, E.ON and Masdar has opened 630MW London Array offshore wind power plant located in the Thames estuary, 20km off the Kent and Essex coast.

The world’s largest wind farm comprises 175 wind turbines supplied by Siemens of each 120m diameter and 3.6MW capacity.

The plant is expected to provide electricity to nearly 500,000 British households.

Siemens president and CEO Peter Löscher said that the world’s largest wind farm London Array marks a milestone in the development of offshore wind sector.

"Projects of this magnitude contribute to further industrialization of complex production and logistics processes for offshore wind power plants," added Löscher.

Besides providing turbines and grid connection, Siemens will provide service operations in collaboration with Dong Energy, according to the terms of the agreement.

Prime Minister David Cameron noted: "This is a great day for Britain and a big win for renewable energy. London Array shows you can build large scale renewable energy projects right here in Britain. This is because when it comes to clean energy, the UK has one of the clearest investment climates globally".