Table A20.4.   Examples of emission regulation on combustion processes (World Bank 1998). Country/ Region Plant and fuel type Capacity  MWh As to Regulation EU Combustion plants, new by 1990   >50 NOx  max. 650 mg/m³* Combustion plants, new by 1990 Coal, <10% volatiles >50 NOx  max. 1300 mg/m³* Combustion plants, existing >50 NOx  total NOx must not increase more than 94% from 1980 to 1993/98 Combustion plants, new by 1990 <100 SO2 max. 2000 mg/m³* Combustion plants, new by 1990 >500 SO2 max. 400 mg/m³* Combustion plants, new by 1990 Indigenous high/variable sulphur coal >500 SO2 min. 90% S removal All point sources by 1990 >500 particles max. 18 g/GJ fuel input Germany  New conventional boilers 10-50 NOx  max. 400 mg/m³* New and existing boilers >300 NOx  max. 200 mg/m³* Existing and new plants Hard coal and lignite  <1 S max. coal S content 1%  Existing utility and industrial plants >300 SO2 max. 400 mg/m³* Point sources, coal and lignite  >50 particles max. 18 g/GJ fuel input USA Industrial plants by 1986 FBC (fluidised bed), coal >29 NOx max. 740 mg/m³* Industrial plants by 1986   >29 SO2 max. 740 mg/m³* and min. 50% S removal All point sources    particles max. 50 mg/m³* * normal cubic metres, i.e. at 0°C, 101.3 kPa, dry flue gas at 6% excess O2, except for USA