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Significance of energy efficiency for energy security

Energy security of the European Union is one of the most important parameters that determine the present and the future on the world's geopolitical scene. EU countries are characterized by: insufficient fossil fuels from their own sources, continuous increase in consumption and strict environmental regulations (which limit the use of coal and oil). From all of the above, it follows that the long-term energy security of the European Union can be ensured by increase of gas supply capacity and diversification of sources of supply. The main objective of the paper is to analyze the situation and perspective of optimizing energy efficiency in the countries of the European Union through the application of resource of energy saving and new and innovative technologies of renewable resources.