Das Projekt "Energy and environment - optimal control strategies for reducing emissions from energy productions and energy use" wird vom Umweltbundesamt gefördert und von Universität Stuttgart, Institut für Kernenergetik und Energiesysteme durchgeführt. Objective: Due to the complexity of the energy system, the analysis and the identification of efficient emissions reduction strategies require adequate methodological instruments. The development of our energy-environment model based on efom 12c model that describes the energy systems in the different ec countries in a detailed form is a promising starting point for the analysis of the following problems and questions: -the future development of air pollution emissions from energy. -impacts of further improvement of energy efficiency and of a possible increase of the market share for solid fuels. -effects of emission reduction measures and policies. -cost-optimal emission reduction strategies. -waste management for the follow-up products. -contribution of interregional measures. General information: the energy model efom developed within the eg-project on 'energy systems analysis' which has been extended by an environment-module has already been used as a pilot model for an analysis of cost-optimal strategies to reduce so2-,nox- and dust-emissions in connection with energy production and energy use in the frg. This phase of the project was carried out by three different institutes (ike, iip, ste) each participating according to its specialisation. Ike will be responsible for the overall management of the project in frg. The next phase concerns the interrelationship of 'energy and environment'' to be studied on a European level. A cooperation between institutes of all ec countries has been set up to demonstrate the usefulness of the developed model. The present contract concerns essentially the extension of the environmental study to the ec and the contribution of ike for a successful accomplishment of such project. Achievements: As an important step towards a broader international analysis of energy and environmental issues, the effects of environmental control measures for the reduction of sulphur dioxide and nitrogen dioxide have been studied in detail. The analysis entails all sectors of the economy system. Acid pollution has been the main area of interest since concern in Europe has grown in the past few years as a result of observed forest damage and also because of the reduction of fish populations in lakes. Acid precipitation is considered a possible contributory cause.