In the investigation presented here, problem areas of the energy supply as reserves, reliability of supply, environmental pollution and Investment and financial questions are dIscussed. The author tries to represent quantitatively the boundary conditions of our energy supply System and the sause-effect relations determining the energy market. For the Federal Republic of Germany a simulation model consisting of coupled differential equations is developed, which is able to demonstrate the variations of the energy economic structure of supply and de and under various external conditions. There is in particular a dose analysis of the strength of Feedbackbetween energy consumption and economic growth, the effects of various modes of supply under abnormal conditions and of realizable alternative supply patternsduring the investigatory period
