Utrecht University (UU), founded in 1636, is an internationally renowned research university. The quality of research at the University is demonstrated by positive research evaluations and a high position in international league tables. The research group Energy & Resources (E&R) is the major group in the Copernicus Institute of Sustainable Development, with about 60 staff and researchers. One of its research focus areas is smart grid development, large-scale penetration of photovoltaics and the need of flexibility in our energy grids. The research activities address integration of photovoltaics and other intermittent renewable sources in the energy system, predominantly applied in urban environments. Research includes data management platforms for smart energy and mobility solutions in cities, as well as monitoring, evaluating and optimizing these solutions in practice. Four senior and twelve junior researchers are specialists in this area.