CO2 Emissions from thermal and motor fuels
Carbon dioxide (CO2) is the main greenhouse gas. It is generated primarily when fossil fuels such as oil and natural gas (thermal fuels) or petrol and diesel (motor fuels) are burnt. Once the correction for weather conditions is made to the CO2 emissions from thermal fuels, it is immediately clear whether the threshold values for raising the CO2 levy rate have been exceeded or not.
The CO2 levy for fossil thermal fuels is an important instrument for achieving international and national emissions targets. The CO2 levy rate is raised when degree-day-adjusted CO2 emissions from thermal fuels exceed the stipulated threshold values.
CO2 emissions from thermal fuels in 2020 sank to 68.8% of emissions in 1990. This reduction in CO2 emissions was insufficient to reach the threshold value of 67%. Therefore, as of 1 January 2022, the CO2 levy will be increased to 120 CHF per tonne of CO2 (Graph "CO2 Levy").
In recent years, CO2 emissions from motor fuels have always been above 1990 levels, despite a slight decrease since 2008. As a result of measures taken to contain the Coronavirus pandemic, fuel emissions from motor fuels fell sharply in 2020 to 94.5% of their 1990 level. The state is evaluated as medium and the development as unsatisfactory.
CO2 emissions based on CO2 statistics make up only a portion of the greenhouse gas emissions that are reported in accordance with the CO2 Act and the Kyoto Protocol. For an international comparison, please refer to the “Greenhouse gas emissions per inhabitant” indicator.
The energy-related CO2 emissions based on CO2 statistics listed here include all CO2 emissions from motor fuels and from thermal fuels subject to the CO2 levy and are corrected for weather conditions.
Energy-related CO2 emissions based on CO2 statistics are calculated by adding up the individual emissions from fossil motor and thermal fuels. These are calculated as follows: emission = annual activity * emission factor. The annual activity rate captures the magnitude of an activity, which in this case is the annual consumption of a thermal fuel (e.g. heating oil, natural gas) or a motor fuel (e.g. diesel oil, gasoline, kerosene, aviation gasoline). In this calculation, an adjustment for degree days and solar radiation is made for the thermal fuel emissions in order to account for the influence of fluctuations in weather conditions. Source: Overall energy statistics (Swiss Federal Office of Energy).
The full time series is recalculated in the event of changes to the methodology, improvements to the available source data or retrospective corrections of error.