By using the example of Germany and Poland this multi-level policy dependency analysis by Marco Wedel researches constraints and dependencies of the European Integration of the promotion of renewable energy source electricity (RES-E).To gain insightful results, the author does not only take a look at the implementation effectiveness of the relevant Directive 2009/28/EC, but much more generally analyses the potentially conflicting polity implications of the entities involved, as well as their respective policy preferences and processes in light of RES-(E). Combined, these give rise to multi-level constraints and dependencies for the European Integration of RES-(E) promotion. Content RES-E Promotion EU, Germany, Poland European Integration, Policy/Polity-Conflicts Energy Policy and Sustainable Development Target groups Scientists and students of Political Science, Social Science and International Relations Practitioners and politicians from the energy sector The Author Marco Wedel studies the development of sustainable energy in theory and practice. He works in the context of energy and European Integration.