Nowadays the main power sources extensively used by the humankind are represented by the various types of fossil fuels, first and most of all, by oil and gas. However, these sources have limited reserves that will be deploited within the next 100-200 years according to various estimates. Unlike traditional power industry, power industry of renewable energy sources (RES) is not based on substance reserves, but on natural energy flows. These are wind flows, solar radiation, heat of the earth interior, etc. This paper focuses on the usage of the world's energy resources over the past 40 years and offers new solutions for employing the leading approaches for using renewables in otder to improve the energy security. Based on the conducted structural analysis of the stored energy resources, the rationale for the use of renewable power sources considering national energy security is provided, and a model for their economic evaluation is proposed through the example of wind generation facilities.
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