They are expected to start supplying power to the German grid before the end of this year, eventually supplying 220 gigawatt hours annually.
All turbines up at Alpha Ventus
GERMANY: The last of 12 five-megawatt turbines has been erected on the Alpha Ventus wind farm in the German North Sea.
19 November 2009 23:00 GMT
Updated
25 November 2012 11:53 GMT