# Carbon dioxide (CO2)

The largest source of the emission of  CO2 is the energy sector, which includes the combustion of fossil fuels such as oil, coal and natural gas. Transport is the dominant source contributing 42.0 % of the total  CO2 emission. Energy industries contributes with 27.4 %. The  CO2 emission (excl. LULUCF) decreased by 10.9 % from 2018 to 2019. The main reason for this large decrease is decreasing emissions from energy industries due to a decrease in the consumption of fossil fuels. Emissions from the transport sector decreased slightly driven by decreased diesel consumption. In general,  CO2 emissions fluctuate significantly as a result of the electricity trade with neighbouring countries. In 2019, the actual  CO2 emission (excl. LULUCF, incl. indirect  CO2) was 43.0 % less than the emission in 1990.

CO2 emission, 2019

Links to detailed background data for greenhouse gas emissions can be found under "Supporting documentation".