Integration of on-farm biodiesel production with anaerobic digestion to maximise energy yield and greenhouse gas savings from process and farm residues

► Improved sustainability for biodiesel production from oilseed rape was investigated. ► Laboratory co-digestion trials provided data on methane yields and process stability. ► Case study modelling showed energy surpluses and reduced GHG emissions. ► Internalisation of farm energy use ensures self-sufficiency and security of supply.