The report was produced by the Climate and Environment work group within the framework of IVA’s Electricity Crossroads project. The group’s task was to explore the consequences of various scenarios, prepared previously within Electricity Crossroads, for the future electricity supply. More solar & wind and new nuclear are the two production alternatives that will have the most positive effects on environmental quality goals. Biodiversity, resource use and climate change will be significant future climate and environmental challenges for the electricity system.