In the context of gathering crude biowaste stream data, regional dependencies of biowaste sources hinders a one-size-fits-all solution, and requires in-depth local studies of availabilities and chemical compositions that reflect obtainable feedstocks. 6,8 Geographical Information Systems have been utilised to locate agricultural biowaste resources, e.g. locations of palm oil or sugarcane mills as well as plantations, and domestic waste has been studied, for instance by sampling selected households. 17 Alternatively, data provided by governmental agencies and literature can be used to gain a rough overview on the waste ecosystem and waste stream compositions at specific locations. In cases where quantitative data is not available the same sources could also be used to judge the practical viability of utilizing biowaste streams based on qualitative criteria.