Danish emission inventories for stationary combustion plants:Inventories until 2018

Emission inventories for stationary combustion plants are presented and themethodologies and assumptions used for the inventories are described. Thepollutants considered are SO2, NOx, NMVOCs, CH4, CO, CO2, N2O, NH3, particulate matter, black carbon, heavy metals, PCDD/Fs, HCB, PCBs and PAHs. The CO2 emission from stationary combustion was 54.8 % lower in 2018 than in 1990 and the total greenhouse gas emission was 53.9 % lower than in 1990. However, fluctuations in the emission level for CO2 are large as a result of electricity import/export. A considerable decrease of the SO2, NOx and heavy metal emissions is mainly a result of decreased emissions from large power plants and waste incineration plants. The PM emissions increased until 2007 and decreased after 2007. The increase until 2007 was caused by the increased wood combustion in residential plants. However, the PM emission factors have decreased for this emission source category due to installation of modern stoves and boilers. The stabilisation of wood consumption in residential plants in 2007-2014 has resulted in a decrease of PM emission from stationary combustion between 2007 and 2014. The PCDD/F emission decreased until 1999 due to improved flue gas cleaning on waste incineration plants. In recent years, residential wood combustion is the largest emission source.