The article appears to be an attempt to decipher such notions as “International Energy Law” and “Energy Law of the European Communities”. The author considers it is too early to speak about a separate branch of law or separate system of legal norm as International Energy Law or Energy Law of the European Communities, although they could appear in the future following further development of the international treaties in the energy sphere. At the modern stage it could be useful to study and teach “international and EC energy law” as a separate academic discipline