4.5 MW 500 ton wind turbine

[Jed Rothwell]

A monster! The rotor diameter is 114 meters, the tower is 120 meters tall. 
I think this is mainly intended for offshore applications. See:

http://www.diabgroup.com/europe/literature/e_pdf_files/e_pia_pdf/wind/e112.pdf
See also:

http://www.loe.org/shows/shows.htm?programID=05-P13-00014#feature1

- Jed