Aim of presented paper is provide the latest approaches towards energy security, to examine methodological foundations used, and to contribute to the contemporary discussion by providing new insights stemming from emerging needs of enhancing energy security. In the presented paper a role of energy efficiency among other constituents of energy security is being discussed. The second – analytical – part of paper is devoted to forecasting of long-term (until year 2050) energy intensities in household sectors in the following countries: Lithuania, Estonia, Belgium, Germany, Luxemburg and Bulgaria. Author claims, that revealed differences provide theoretically grounded foundations for further benchmarking of energy intensities.

DOI: https://doi.org/10.3846/bm.2016.66