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 prosincu 2004, predstavnici 25 zemalja članica EU i zemalja jugoistočne Europe postigli su sporazum o temeljnim načelima energetskog sporazuma i odlučili uspostaviti energetsku zajednicu.