Within this chapter the book goes beyond the discussion on the region and EU and provides an examination of how specific positions of CEE countries towards energy and climate policy fit within global energy transitions. It highlights the ability of regional experience to provide insights into global energy transition challenges, and the lessons the region can offer for discussions about how to approach the pathways towards carbon-neutral economies; many challenges of CEE countries are shared internationally. As the region has to adapt to EU climate and energy policies, but is at the same time able to shape these, it provides insights into the process of developing and implementing decarbonisation policy. Our analysis of how EU enlargement has shaped mid- and long-term EU climate and energy policy is a contribution to understanding the EU’s role as an international actor.