Industrial enterprises are increasingly driven to tap the potentials of energy efficiency in existing and future production sites. The challenge is to identify cost-efficient investments for lowering the energy demand. General recommendations for the implementation of specific energy efficiency measures need a dedicated analysis of the use case of a production machine, such as a machine tool. Still users intend to find appropriate measures enhancing the energy efficiency of their production machines, while increasing the profitability simultaneously. The easy to applicate approach, which is presented in this paper, avoids costly generation and interpretation of energy data while, retaining a sufficient accuracy of the obtained recommendations for energy efficiency measures.