Today there is a big challenge for producing companies to improve their energy efficiency. Generally, a lot of separate measures are performed to optimize energy efficiency of objects in a factory. Because of a missing holistic consideration of interdependencies between the objects in a factory, a huge potential to save energy is completely ignored. To encounter this obvious weak point, the developed method, which is descripted in this article, enables to valuate and design energy efficient factories considering the interdependencies. The factory is observed on two different levels of detail. The method is focused on small and medium-sized factories.
