Last year in November, Alsom installed 6-MW Haliade™ 150, off Ostend harbour at the Belwind site in Belgium.
This is the largest offshore wind turbine ever installed in sea waters. It consists of 150-metre rotor, and can power around 5,000 households.
Check out this video of the most powerful offshore wind turbine made by Alstom.
Offshore WIND staff, April 07, 2014; Image: alstom