YBhg. Prof. Dato’ Ts. Dr. Kamaruzzaman Sopian is a Professor in Renewable Energy at the Solar Energy Research Institute, a center of excellence for the research and development in solar energy technology in National University of Malaysia. He has been involved in the field of solar energy for more than twenty years. His main contributions are in solar radiation modelling, alternative material for solar absorber, solar water heating system with integrated storage system, solar desalination, solar cooling, daylighting using solar light pipes, solar assisted drying systems, grid connected photovoltaic system, thin film silicon solar cells, combined photovoltaic thermal or hybrid collector and solar hydrogen production system. He has published over 400 research papers in journals and conferences. He has delivered keynotes speeches at national and international conferences on renewable energy. He is the founding member of the Malaysian Institute of Energy, member of the World Renewable Energy Network based in the United Kingdom and is an associate editor of the Renewable Energy published by Elsevier Ltd. He heads several national subcommittees on renewable energy by the Malaysian government to promote awareness, market enhancement, policy studies and the applications renewable energy.