Dr. Ali Sayigh is Chairman and Founder of the World Renewable Energy Congress and Council; Director General of the World Renewable Energy Network (WREN); Chairman and Founder of the Arab Solar Energy Society; and Past Chairman of the UK Solar Energy Society. Dr. Sayigh actively consults on renewable and sustainable energy issues for a number of international organizations, including UNESCO, ISESCO, UNDP, ESCWA, & UNIDO. Dr. Sayigh was Director of Solar Seminars at ICTP Trieste, Italy from 1977-1995; Professor of Solar Energy at King Saud, Kuwait, and Reading Universities from 1969 to 1994, and Professor of Engineering at the University of Hertfordshire from 1994 to 2004. He was the founding expert in Renewable Energy at AOPEC. He is a Fellow of the Institute of Energy, a Fellow of the Institution of Engineering and Technology (IET), a Fellow of the Royal Society of Arts, and a Chartered Engineer. He has published more than 400 papers and has contributed to and edited more than 30 books. He has been Editor and Editor-in-Chief of several international journals, including Renewable Energy and the International Journal of Environmental Sciences and Technology and Editor-in-Chief of the reference work Comprehensive Renewable Energy.