Compilation of this V4 Summary Analysis and Policy Recommendations has been made possible thanks to the generous support of the International Visegrad Fund in a project „More effective use of the 2021 – 2027 Cohesion Funds for energy security of the Visegrad“, pursued by a consortium including Buildings for the Future (Slovakia, project leader), Chance for Buildings (Czech Republic), Energiaklub – Climate Policy Institute Applied Communications (Hungary) and National Energy Conservation Agency (Poland, NAPE).