The AGEC law (n° 2020-105 Fighting waste and the circular economy) requires local authorities to offer households a solution for the recovery of their food waste from 1 January 2024. The Lyon conurbation has set up a hybrid system for managing household biowaste. The current solutions are implemented at different scales: individual (individual composters), neighbourhood (community composters) and semi-industrial (industrial composting). This article proposes a territorial analysis, combining metabolic and circular economy approaches, to examine how urban household waste can be reintroduced into a local production system through composting. This article is based on two approaches. The first is a data collection on composting processes and agricultural amendment. The second is a field study using semi-structured interviews, site visits and local data collection. A flow diagram and a representation of their distribution (by type of composting and outlet) have been drawn up, in order to identify the levers for territorial closure of flows. This is a modelling tool for understanding the collection and management of household biowaste that can be used for public policy purposes. We have developed two scenarios for the reintroduction of biowaste into a local production circle through composting. They are based on four sets of assumptions: political, spatial, economic and agricultural. They show the feasibility of a territorial cycle ’from plate-to-field’ and highlight the role that biowaste management can play in the implementation of a policy of relocalisation of food production. This result raises other operational issues as well as questions about the social, economic and governance acceptability of compost made from household biowaste in agriculture.