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The production of biogas is positioned as energy which can not only generate a source of energy known as "green" but also which can recycle waste. In the context of sustainable development, the place of biogas is therefore essential. The risks corresponding to the production processes and uses of are still too little known. Several questions about the optimization of the production, the safety, the harmonization of the regulations and the need to develop standards are discussed in this paper, based on the results of a workshop on biogas safety and regulation organized in November 2010 by the authors