Alain Nadaï is a senior interdisciplinary social scientist who has worked for over fifteen years on renewable energy policy and development in France and he EU. He has been a lead author for the IPCC Special Report on Renewable Energy Sources and Climate Change Mitigation (SRREN 2011). He has developed an empirically grounded and conceptually sophisticated critical approach to the current conduct of the energy transition, emphasizing the need for a more democratic appraisal of the development of renewable energies. His recent research explores questions of democracy associated with the socio technical construction of ‘renewability’ as a quality of new forms of energy and their use in electrification. Nadaï will lecture on the politics of legitimacy in transitions to renewable energies in democracies.