Kai Freudenreich has been working in the wind industry for more than 15 years. He is currently a Principal Specialist at the Certification Body DNV GL in Hamburg. He studied mechanical engineering at Ruhr-Universität Bochum in Germany and received his PhD at the Royal Institute of Technology in Stockholm, Sweden. After spending 3 years with a wind turbine manufacturer, he is working in the department of Loads, Site Conditions and Electrical Engineering at DNVGL. His fields are loads, tropical cyclone conditions, cold and icing climate conditions and standards. He is member of the IEC TC 88 MT01 committee editing IEC 61400-1 and the project group editing the German Guideline for Wind Turbines.