Gianni Silvestrini is an Italian researcher. From 1977 to 2014 he taught at the University of Palermo and at the National Research Council in the fields of solar technology and energy policy. Research activities From 1977 to 1982 worked for the University of Palermo in the field of simulation models for solar technologies and energy efficiency in buildings and was visiting researcher at the Lawrence Berkeley Laboratory. Since 1983 he continued his activity at the National Research Council Institute, focused on Energy and Buildings (Ieren). During this period he was involved in the Task 11 of the International Energy Agency “Passive and hybrid solar commercial buildings”. Since 1988 he enlarged his activities in the area of environmental and energy strategies, with studies at urban, regional and national level. A particular attention was given on the issue of global warming, with the preparation of specific studies for the Ministry of Environment. From 2004 to 2006 he was professor at the Politecnico di Milano and has launched the post graduate Master “Ridef – Energy for Kyoto” on energy efficiency and renewable energies that has continued to follow as responsible until now (www.ridef.it). He is author of more than 100 scientific papers and co-authored 5 books (“Solar Architecture”, 1984, textbook at Polytechnic of Milan; “The future of sun”, 1990, “La corsa della green economy”, 2010, "2 C, Innovazioni radicali per vincere la sfida del clima e trasformare l'economia", Ed. Ambiente 2016; "Le trappole del clima - E come evitarle". Ed. Ambiente 2020) and is member of the advisory board of different associations and journals in the field of energy. Institutional activities He was President of “Bologna-Energia 2010”, the Energy agency of the City of Bologna and acted as Advisor of the Mayor of Palermo in the area of Energy and Environment. From 1997 to 2000 he was advisor of the Minister of Environment and from 2000 to 2002 he was appointed as General Director at the Ministry of the Environment. During this period he has been involved in the policies connected with the Kyoto Protocol, particularly on energy efficiency and in the field of renewable energies. In this area he coordinated the Italian “10.000 solar roofs” program and launched the "Car Sharing" program in Italy and the "Car Free Sundays" From 2007 to 2008 he was energy advisor of the Minister of Economic Development and was involved in the definitions of new laws