Efficiency of Implementing Climate/Energy Targets of the Europe 2020 Strategy and the Structural Diversity between Old and New Member States

The most important goals included in the Europe 2020 Strategy are climate/energy targets, which determine not only achievement of its other but also climate neutrality by 2050. This article aims to assess efficiency implementing targets and analyse changes over time, taking into consideration structural diversity between old (EU 15) new EU members 13) period 2014–2018. assessment time adds value evaluation methods used date this area. was done using data envelopment analysis (DEA) Malmquist index. Earlier works usually specified level target achievement, mostly jointly relation all Strategy. their implementation at macroeconomic has been studied. Furthermore, added paper consists obtaining additional information concerning internal structure character studied member states. Changes have analysed with regard key indicators monitor Based on results, countries were divided six groups similar levels achieving energy objectives ranked DEA–Malmquist index according time. makes it possible performance formulate recommendations for decision-makers.