Interdependencies between energy productivity and target figures of lean production systems

Energy productivity will be a significant competitive advantage for manufacturing companies in future. Therefore, a methodical approach is necessary to identify potential in manufacturing and reduce energy waste. In order to develop this approach, it is obligatory to consider interdependencies to established production systems. Starting with Toyota, car manufacturers were pioneers for the implementation of Lean Production Systems (LPS). Their production processes are measured by LPS target figures like quality or through-put time. Efforts to raise energy productivity can cause impacts on existing production processes and therefore result in interdependencies with LPS target figures. The methodology presented in this paper helps to increase energy productivity under consideration of these interdependencies. The so called House of Energy Productivity is introduced as one important part of the methodology.