Moving from CO2 to CO2-equivalents
Until last year, our calculations focused primarily on carbon dioxide (CO2) emissions from our operations as the most significant contributor to climate change. As suggested by EN 16258, we have extended the scope and now also cover all other greenhouse gases as defined by the Kyoto Protocol, such as methane (CH4) and nitrogen oxide (laughing gas, N2O). Depending on their effect on climate change, we convert the quantities of these other greenhouse gases to CO2-equivalents (CO2e), one commonly used measure. The inclusion of CO2e in our carbon accounting began in 2012 and became automated within our Carbon Accounting System in the reporting year. Based on the recommendations of the EN 16258 standard, we have recalculated our previous years' data to ensure like-for-like comparability.
Moving from CO2 to CO2e increases the emission figure for our total carbon footprint in scopes 1 and 2 by only 0.01 million tonnes of CO2e – a share of less than 1%.