In the second half of the XX century, international organizations start to play a significant role in the global energy system, constructing it and creating a new legal framework for cooperation. Both global and regional organizations contribute to the development of the global energy security system. Regional organizations conduct effective energy diplomacy as a result of the pragmatic foreign policy interests of these structures. International organizations implement their own energy diplomacy by creating standards of energy security, energy efficiency and diversification of energy sources, strengthening energy independence of as the organization as a whole and the individual member countries also, the expansion of the regulatory framework in the energy sphere not only in the member countries, but also to neighboring countries. Specific means of energy diplomacy are the establishment of the energy dialogue, the imposition of sanctions and providing assistance program for the development in the field of «green» energy.