Mr. Lehtomäki has been part of VTT Technical Research Centre of Finland Ltd since 2009. He has a Master’s degree on mechanical engineering on product development from Helsinki University of Technology. Currently as Senior Scientist, his everyday work focuses on coordinating and developing new projects and technology innovations mainly in the field of cold climate wind power. He specializes in icing effects on blades, iced wind turbine dynamics, ice detection and pre-construction icing loss assessments. He is the Operating Agent of International Energy Agency (IEA) Wind Task 19 “Wind Energy in Cold Climates”. He is the coordinator of European Energy Research Alliance Joint Program Wind (EERA JP WIND) Sub Program on Cold Climate focused on medium to long-term research needs. He is the coordinator of cold climate sub-committee in the revision of IEC 61400-1 ed3->ed4 “Design requirements for wind turbines” standard. He is also working with IEC 61400-15 ed1 “Energy yield assessment” standard regarding cold climate effects. He is on a mission to transform cold climate wind power into a mainstream market.