InnovationPower of Siemens Gamesa’s secretive record-sized wind turbine confirmedManufacturer has kept details of its prototype offshore wind machine shrouded in secrecyThe new machine will dwarf Siemens Gamesa's existing 14MW SG 14-22 DD 236 wind turbine, seen here being installed at Osterild.Photo: RechargeCosmo SandersonJournalist