The issue of energy security and energy independence of the EU is one of the key factors in ensuring the stable development of the association. The subject of the study is the energy concepts of the European Union. The object of the study is the modern energy policy of the EU countries. The countries of the European Union are among the world's largest importers and exporters of energy resources, and therefore one of the criteria for EU energy security is the creation of secure logistics chains for uninterrupted energy supplies, since this factor has always been one of the most important problems in energy security. However, despite all the data that the European Union has, this area is a source of numerous problems for ensuring energy security that the EU faces at the current stage of its development. The methodological basis of the study is a systematic analysis and a geo-economic approach. The systematic approach was used in the work to identify the reasons for the transformation of EU energy concepts in the context of the energy crisis. The geo-economic approach allows us to qualitatively consider this issue from the point of view of economics and geopolitics of the countries of Eastern and Western Europe in the context of energy transition. The novelty of the research lies in the comprehensive analysis of the concept of energy security in the complex in the context of energy transfer. The authors pay special attention to the analysis of the energy policy of the European Union, numerous new initiatives and documents related to this area, as well as the development of the concept of green energy. The authors highlight the challenges that the EU will face on the way to building a stable and safe energy sector. The paper also examines the impact of the EU's energy policy on the concept of European unity. Attention is being paid to the EU's attempts to diversify energy supplies, which plays an important role in the context of the Ukrainian crisis and complications from the loss of Russian supplies. The authors conclude that the lack of internal unity within the EU does not allow for an effective and sustainable energy policy, since the European Union does not have a common energy legislation, and infrastructure development between the countries of Western and Eastern Europe is overly diversified, which does not allow us to talk about the transformation of energy policy in the EU countries at the present stage.