 Energy security is a complex concept that encompasses multiple dimensions. It can be defined as the ability of a country to ensure reliable access to energy resources, both domestically produced and imported, at affordable prices. This definition focuses on the availability of energy sources and their cost. Other definitions emphasize the need for energy independence, which implies the ability to produce sufficient energy from domestic sources without relying on imports. Still other definitions focus on the security of energy infrastructure, such as the reliability of electricity grids and pipelines. Energy security also involves the protection of the environment and the mitigation of climate change. This article was offered by Yasik Strajnyi, Anna Krakovyakba, Yaroslav Naga, and others.