GHG by product
When it is possible to deduct the quantity of a product from its quantity, for example in transport with petrol, or for housing with electricity;
For example, the emission factors for electricity in France are 0.32 kg of CO2eq per euro spent. This figure is obtained by estimating the average emissions of a conventional electricity contract in France, which are 0.0571 kg CO2eq/kWh, with an uncertainty of 5%, and the regulated tariff in 2019 was 0.1765€ including tax per kWh of electricity in 2019.
GHG per service
By applying to the amount of the expenditure a coefficient per sector of activity or per specific company ratio. This method is particularly well suited to services, especially IT and financial services, or cultural offerings. This ratio is calculated by dividing the carbon footprint of the company or sector (scope 1,2,3), by its turnover;
For example, the emission factors of video streaming are estimated at 1.44 kg of CO2eq per euro spent. Indeed, video on demand (VOD) would have emitted 102 Mt of CO2eq for a total turnover of 71 billion in 2018.
GHG by baskets
When a banking transaction refers to grouped purchases of products, for example in food or clothing. According to a method used by ADEME, the estimate is obtained from a representative mix of typical products, whose carbon footprint and average prices are known. For this category, Greenly aims to continuously refine the analyses, and to allow users to specify which item it is, in order to make the estimates even more precise.