Konstantinos Gkarakis graduated from the Athens University of Applied Sciences (ex-TEI Athens) and has Master Science in Energy from Heriot Watt University in Scotland and MSc in Energy: Strategy, Law and Economics. His employment experience included the Umweltkontor Hellas, WRE Energy, Acciona Energiaki, Elica (Copelouzos - Samaras Group of Companies), AirEnergy, Intracom Constructions. His special fields of interest include wind resource - energy estimations in wind energy projects and wind energy plants development. Now, he is free-lancer wind engineer and wind energy expert for the control of wind measurement laboratories in Hellenic Accreditation System S.A. Also, he is scientific associate in RES Lab, Energy Technology Department, in Athens University of Applied Sciences and visitor lecturer at Postgraduate programs of Piraeus University of Applied Sciences and at the Panteion University. Since 2015 he is reviewer in Renewable Energy Journal.