In December 2004, representatives of the 25 EU member states and the states of the South East Europe agreed on the basic principles of an energy treaty and decided to establish an energy community.
U decembru 2004, predstavnici 25 članica EU i zemalja jugoistočne Evrope dogovorili su se o osnovnim principima energetskog ugovora i odlučili da formiraju energetsku zajednicu.