1. As a signatory state of the Climate Convention of the UNFCCC and of the Kyoto Protocol Germany is obliged to report on its emission of greenhouse gas. These so called emission inventories have to be have to be produced, published, and updated every year. The National Inventory Report (NIR) 2003 describes and explains the methods and presumptions of the emission inventories for the first time. This report covers the emission inventories of the years from 1990 to 2001.