Emission from plants 1990-2000

Emissions from power plants consist of several substances with different environmental effects. Most important is emission of CO2,SO2 and NOx. The actual emission of CO2 declined from 33 million ton in 1997 to 29 million ton in 1998, while the corrected emission of CO2 declined from 27 million ton to 26 million ton. The primary cause to the decline in the actual emission of CO2 is the constant changing of the energy consumption from coal towards natural gas. The corrected emission of CO2 increased a little from 1989 to 1991, but has declined since 1991. The actual emission of CO2 has been more variable, which especially reflects the fluctuating import and export of electricity. The actual emission of SO2 has in the period varied, but the tendency is declining emission of SO2. In the years 1991 and 1996 the actual emission of SO2 increased, these being the years where the net export of electricity increased. The corrected emission of SO2 has generally declined during the period. The actual emission of NOx has varied during the period, but the tendency is declining emission. Emission of NOx has been large this year with large electricity export. Correction the emission for net import and export of electricity the NOx emission has declined during 1989-1998. The corrected emission of NOx has declined 54 % during the period 1989-1998. The reason is primary the usage of low NOx burners. (EHS)