The article describes the leading world trends and factors of state regulation of “green” energy development as a key element of energy safety of mankind at transition stage to globalized society. Paradigm change of energy safety of mankind, problems and obstacles on the way to abandon hydrocarbons use as the main energy sources and replace them by renewable environmentally friendly sources are analyzed. International and national normative legal documents regulating functioning and “green” energy development are characterized. Mechanisms for strengthening Ukraine’s energy safety by acceleration stimulating of construction of new generation power plants using exclusively renewable energy sources in our country were proposed.