ERGaR, the international non-governmental, non-profit organisation, is built on knowledge and experience of established renewable gas registries and major stakeholders of the European renewable gas market. ERGaR aims at becoming the Europe-wide recognised organisation for administering and mass balancing volumes of renewable gas virtually distributed along the European gas network. Based on the cooperation of national renewable gas registries in all European countries an independent, transparent and trustworthy documentation scheme for the cross-border transfer and mass balancing of sustainable renewable gas will be established in such a way as to preclude miscounting. ERGaR will support the establishment of national registries in each European country and aims at their incorporate into its system.