(c) Sky News 2010
The operators of Thanet believe that it heralds a new era in the UK's growing renewable energy sector.
It has cost £800m to build the 100 turbines which will be able to produce 300 megawatts of electricity - enough green energy a year to power the equivalent of more than 200,000 homes.
Energy Secretary Chris Huhne MP told Sky News: "What we are determined to do is by creating more of our own energy within the United Kingdom to make us safe from the shocks we have seen in the past in the oil markets and gas markets.
"That is good news for consumers and businesses."
The site, seven miles off the Kent coast, will boost the country's capacity to generate wind power by 30%, a big step towards reaching the tough targets in place.
But overall the UK is still lagging behind European neighbours in this emerging industry - the reason why the Thanet farm has had to use Danish turbines and is run by a Swedish company.
Environmental campaigners are urging the Government to invest more in renewables.
Friends of the Earth warned that the UK's record on renewable energy remained "dismal" and said more money in green power would deliver jobs and low-carbon industry.
Thanet is determined to support the local economy, as the 21 workers who will maintain the farm are almost entirely from Kent.
Trevor Arnold, 46, retrained after working in the struggling construction industry.
The engineer told Sky News of his pride that there was a new industry offering opportunities in his home town of Ramsgate.
He said: "It is about the future, obviously the youngsters are the future so are wind farms and they should go together as one."
But Thanet already has competition - other developers are already planning to eclipse the wind farm by building an even bigger neighbouring project.
When finished the London Array site in the outer Thames estuary will have 341 turbines with the potential to power 750,000 homes.
