The first Polish EU Presidency can be evaluated as moderately successful. The Presidency has contributed to deepen cooperation in the energy sector and was very successful from organizational and logistics perspective. Priorities in the energy sector included an ambitious catalog of measures, in particular within the external dimension of the EU energy policy. The Polish Presidency outlined long term objectives in the energy sector and initiated a deeper discussion of the completion of common energy market building. Progress and better coordination of Member States’ energy policies will increase energy security of the EU. From the point of view of national interests, as a failure can be recognized adoption by the European Commission Energy Roadmap 2050 document at the end of the Polish presidency as well as not convincing the Commission to find a more flexible options for solving problem of reaching a low carbon economy with respect to circumstances of member countries, with a high degree of carbonization of their economies.