An increasing number of Climate Assemblies are being organised at different levels of governance across Europe and beyond. Much of the focus has been on the internal practices of these assemblies and less on the ways in which they are integrated into the policy process. This research brief considers the relationship between Climate Assemblies and the broader policy system and policy cycles and the barriers and opportunities to integration. It considers the ways in which Climate Assemblies have been organised at different stages of the policy cycle and how their recommendations have been translated into the policy process. Drawing on the broader experience of citizens’ assemblies around the world and targeted interviews, it asks how we can best integrate Climate Assemblies into the climate policy system and at what points in the policy cycle.