The 2001 EU Directive on National Emission Ceilings

In 2001, the European Union reached agreement on a set of national emission ceilings for the main air pollutants. The quantitative ceilings for SO2, NOx, NH3 and VOC were derived from a series of cost-effectiveness analyses with IIASA's RAINS model and aim for improvements in acidification, eutrophication and ground-level ozone. 

Between 1996 and 2000, IIASA prepared eight policy reports that explored cost-effective emission ceilings, and discussed them with stakeholders from Member States and Industry. 

Information about the Emission Ceilings Directive, the legal text of the directive


  • February, 2000: Eighth Interim Report. Cost-effective Control of Acidification and Ground-level Ozone: Further Analysis. Download Part 1 - Download Part 2
  • January 1999: Seventh Interim Report. Cost-effective Control of Acidification and Ground-Level Ozone. 
  • October 1998: Sixth Interim Report. Cost-effective Control of Acidification and Ground-Level Ozone .
  • May 1998: Fifth Interim Report. Cost-effective Control of Acidification and Ground-Level Ozone.
  • February 1998: Fourth Interim Report. Cost-effective Control of Acidification and Ground-Level Ozone. Download report
  • October 1997: Third Interim Report. Cost-effective Control of Acidification and Ground-Level Ozone. Download report
  • December 1996: Second Interim Report. Cost-effective Control of Acidification and Ground-Level Ozone. Download report
  • October 1996: First Interim Report. Cost-effective Control of Acidification and Ground-Level Ozone. Download report
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Last edited: 11 October 2018

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