Prof. Dr. Wilfried van Sark is "Integration of Photovoltaics" full professor at the Copernicus Institute of Sustainable Development, University of Utrecht, the Netherlands. He is an experimental physicist by training (MSc/PhD) and has 40 years of experience in the field of photovoltaics. His current activities focus on employing spectrum conversion to increase solar cell conversion efficiency for next-generation photovoltaic energy converters such as luminescent solar concentrators, as well as performance analysis of building-integrated and standard PV systems in the field. He is member of the International Solar Energy Society, a senior member of the Institute of Electrical and Electronic Engineers (IEEE), and member of scientific committees of various EU and IEEE PV conferences. He is currently national representative in the International Energy Agency (IEA) PVPS Task 13 (PV Performance, Operation and Reliability of Photovoltaic Systems) and Task 16 (Solar Resource for High Penetration and Large Scale Applications).