Full Professor of Renewable Energies, Institute of Energy and Environment, University of São Paulo (IEE-USP). PhD in Photovoltaic Systems (IES-UPM, Spain -1993), Livre-docente in Energy (IEE-USP 2006). He is currently a level 1B researcher at CNPQ. Nowadays coordinate the IEE-USP photovoltaic systems research activities.