Does Offshoring Contribute to Reducing Air Emissions? Evidence from Belgian Manufacturing [ Working Paper 05-13 - 24/05/2013]

Since the mid-90’s, production-related air emissions in Belgian manufacturing have been reduced substantially and it can be shown that the pace of the reduction has been fastest for domestic intermediates. It is widely debated whether offshoring has played a role in this reduction by replacing domestic intermediates by imported intermediates. This paper develops a decomposition analysis to measure the contribution of offshoring – the share of  imported intermediates in total intermediates – to the fall in air emission intensities for domestic intermediates. This decomposition analysis reveals that 27% of the fall in the intensity of greenhouse gas emissions, 20% of the fall in the intensity of acidifying emissions and 20% of the fall in the intensity of tropospheric precursor emissions in Belgian manufacturing between 1995 and 2007 can be attributed to offshoring.