A perspective on methodologies and system boundaries to develop abatement cost for on-farm anaerobic digestion.

The veracity of an abatement cost analysis depends on a clear methodological process.The abatement cost varies based on the processes considered within the system boundary.On-farm digestion abatement costs assessed ranged from -117 to +79 €/tCO_2eq.On-farm emissions savings ranged from 609 to 10,358 tCO_2eq/yr.Abatement costs reduce when considering the income and emissions savings from co-benefits.