Stena Line measures the carbon emissions footprint of transported goods onboard our vessels in the unit of gram CO2/tonkm. This common unit for emissions related to transport work allows you as a customer to benchmark emissions levels with other transportation modes.
To calculate the CO2 emissions caused by your shipment is based on three factors:
Goods weight (metric tons)
Distance of the route (km)
Emission factor CO2 per tonkm
The CO2 factor varies with different factors such as type of fuel, type of ship, utilization grade, speed of the vessel and the allocation between freight and passengers onboard the vessel. That is why there is a difference between the CO2 emissions on our different routes.
For freight emission calculation purposes Stena Line uses the MRV methodology for Ro-Ro and Ro-pax vessels in accordance with the MRV Directive by the European Union. The emission factor per route is based on previous year’s CO2 emissions and commercial data for passenger volumes, passenger vehicles and total goods weight. The data and calculations have been verified by 3rd party.