Anaerobic digestion in insular context can be a good way to treat organic wastes and to dispose of a clean and constant renewable energy. However, insular context implies that waste volumes can be not important enough to provide efficient stocks, so treating mixed wastes is important. In another hand, french regulations obliges big producers of biowaste (kitchen, supermarkets ...) to find a way to recycle the biowaste and can in certain cases prohibit the mixes of waste. This study presents the modelling of household waste biomethane potential measurements, as a mix of pure waste, and the modelling of the different phases of anaerobic digestion via first order and Gompertz models. Results are analyzed. The disintegration coefficients are then used in various model of anaerobic digestion for mixed wastes.