Currently, the biogas sector in Western Europe is faced by rapid technical and non-technical developments and innovations, and biogas markets are growing at a considerable pace. In contrast, the biogas market in Southern and Eastern Europe is rather small, although the potential is promising especially if organic wastes are used for anaerobic digestion. In order to support the biogas market in Southern and Eastern Europe the BiG>East project (Contract No. EIE/07/214) is supported by the European Commission under the Intelligent Energy for Europe Programme. The paper gives an overview about the current biogas market and the biogas potential in Bulgaria, Croatia, Latvia, Romania, Slovenia and Greece. Furthermore, it describes the main barriers of biogas production and proposes different measures to overcome these barriers in the target countries. Finally, the paper discusses the most promising strategies to support the biogas market in Southern and Eastern Europe.