WINDTEST Kaiser-Wilhelm-Koog (WTK) offers (national, international, on- and offshore) Measurements, Expert reports, Periodic inspections and Production and Sale of Shadow Guards. Already in the first years of commercial use of wind energy in Germany, WINDTEST was founded at Kaiser-Wilhelm-Koog in 1998. WINDTEST has the advantage of the location of Kaiser-Wilhelm-Koog which became famous for the GROWIAN-Projekt and the first German windfarm. In the meantime the company developed to a partner of the industry, the operators of WTs and the authorities with international sphere od activity. WTK is represented in Spain by the subsidiary WINDTEST Ibérica S.L.