Abdelbaki Maafi, ICTP Regular Associate (1998-2003) in the field of nonconventional energy, recently passed away. Algerian-born Maafi, who last visited the Centre in 2001, pursued a broad research agenda that included statistical analyses of solar radiation data and mapping, development simulation models of solar radiation, and modelling of photovoltaic systems to improve their storage capacities. Maafi, who received a doctorate in physics at Université des Sciences et de la Technologie Houari Boumedienne in Algiers in 1991, became one of Algeria's youngest senior researchers when he was recently appointed full professor in electronics and applied mathematics at the university where he earned his doctorate.