Clean air is of paramount importance for maintaining a high quality of life. Greenhouse gases and air pollutants (e.g. CO2, particulate matter, carbon monoxide, nitrogen oxides etc.) are by-products of various economic activities such as power and heat production, industrial processes and traffic. The use of a high-quality data management system is necessary to determine the current situation and to identify effective and cost-efficient measures to reduce air pollutants and greenhouse gases.With EMIKAT scenarios can be created, saved, calculated, displayed and compared. In this way it is possible to assess the impacts of intended measures and to evaluate their efficiency. For example, emission savings from the promotion of electric mobility or subsidies for renewable energy can be quantified. The new system thus helps to monitor and improve environmental quality and enhances the quality of life.