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David Cameron offically opened the world's largest off shore windfarm today - describing it as ''great for Kent and great for Britain." He was speaking in Margate after touring the vast site - by helicopter.
The London Array is in the outer Thames Estuary - 12 miles from the coast of Kent and Essex.
There are claims tonight that wind turbines and other forms of green energy will hike up energy bills - something government ministers deny. Watch Derek Johnson's report.
Prime Minister David Cameron said world's largest offshore wind farm was ''good for Kent and good for Britain.''
Mr Cameron described London Array, in the outer Thames Estuary, as a "big win for Britain" which proves the country is capable of delivering large-scale projects.
A small group of protestors shouted slogans as Mr Cameron's car drove in and out - and demonstrated against government cuts.
The PM was speaking at Turner Contemporary in Margate at the inauguration of the fully functioning wind farm, which reached full capacity earlier this year with the commissioning of its 175th and final turbine.
Mr Cameron said the project represented a huge investment for renewable energy and was providing jobs for local people. He denied that mainly overseas companies were benefitting from the construction.
Crowds of protesters against government cuts are growing in Kent for the Prime Minister's visit.
David Cameron is opening a London Array windfarm in Margate today, which is expected to be the largest in the world.