Business air travel emissions

Calculate your company's carbon emissions from business air travel using internationally recognised factors.

Your flight emissions are calculated by Tasman Environmental Markets (TEM), an Australia-based carbon offset provider that supports the SIA Group Voluntary Carbon Offset Programme. It utilises the average flight factors published in the 2020 UK Government Carbon Emissions Factors documentation (DEFRA), which converts emissions from passenger weight, aircraft type, distance travelled, and litres of fuel used, into tonnes of CO2e. This methodology has been selected due to the global nature of operations and emissions sources. The emissions factors used are based on a Tank-to-Wheel/Wing basis without the impact of Radiative Forcing.

When you submit your business travel data, TEM will calculate your carbon emissions, and you can choose to make a voluntary purchase of independently verified carbon offsets from portfolio of accredited carbon offset projects in Asia.

Flight data for each batch of offset transactions must be submitted in a pre-defined format. You can download a template in this format here.