ABSTRACT
This chapter is devoted to reviewing the structure of the concept of energy security and indicating its most essential dimensions from the point of view of energy transformation toward green energy. It discusses the situation of the Baltic Sea region in terms of energy security and the diversity of energy transformation policies. Particular attention is paid to civil society and local government participation in the energy transformation process. These past years put extraordinary pressure on the energy security in the countries of the region because of the geopolitical situation connected with the Russian aggression in Ukraine. In that context, the importance of social acceptance of changes in the energy system should be emphasized.
