This bachelor thesis explores the history of energy policies since the Second World War and the success of its performance from years 2010 to 2015. The first part of this bechalor thesis explores the history and development of energy policy and the various communities during the previous six decades. The second part of this thesis contains an analysis of the economic situation in Europe and in main states in the field of energy resources, evaluation the reasons for planning Energy Union and analysis of success EU energy policies in the period 2010-2015 on the basis of three main energy documents: Europe 2020, Energy 2020 and Energy infrastructure priorities for 2020 and beyond: A Blueprint for an integrated European energy network. The main...