Carbon emissions can de difficult to calculate, let us walk you through the method.
kgCO2 = weight cargo (ton) x distance (km) * emission factor
– Plane: long distance (>700km) = 1,13382 kgCO2e/tonne*km
– Truck = 0,61628 kgCO2e/tonne*km
According to the following calculations and an average of 100kg (300 shirts) shipment we can conclude that:
- The c02 emissions of the transport from Asia → UK are: 0.1 x1.13382 x 7777= 881,8kg c02
- The c02 emissions of the transport from portugal → UK are 0.1 x 0. 61628 x 1812= 111,6kg c02
This would result that in this example of transportation alone* the environmental gain from producing in Portugal is around 8x better compared to producing in China.