Blum - Moving Ideas for Sustainability

26 Energy Sankey diagram illustrating our energy flows 302–1, 302–2 In 1898, Irish engineer Captain Matthew Sankey used this form of diagram – for the first and only time – to illustrate energy flows and losses using pro- portionally thick arrows, in a method that came to be named after him. Although preparing the data for Sankey diagrams is very time-consuming, the information is easy to interpret. Essentially, the wider the arrow, the more energy involved. This diagram shows which energy sources we use, in what form and for what purpose. The international standard ISO 50001 supports us in reducing our energy consumption and lowering our emissions. The key focal points of this energy manage- ment system are the planning process and the company energy assessment, which are designed to optimise our energy performance in terms of con- sumption, efficiency and use. Our energy team is working hard to achieve this goal, supported by our planning process and action plan. One of their tasks is to evaluate the company’s energy performance to see if we’re improving. In practice, this means identifying any efficiency increases. Management approaches Energy usage 2021/22 Production processes Employee mobility Shuttles Air travel Combustion engine fleet Electric fleet Business trips using third-party vehicles (private transport, rental cars, taxis) Mineral oil CNG Electricity mix District heating PV electricity Hydroelectric power Solar thermal Natural gas Train travel 0.43 GWh Waste heat from pressurised air 22.9 GWh Waste heat from processes Heat recovery 5 GWh Waste heat from processes ∼ 6 GWh 165,6 GWh 110,3 GWh 13,08 GWh 1,01 GWh 1,42 GWh 0,94 GWh 0,144 GWh 0,217 GWh 0,034 GWh 0,7 GWh 0,322 GWh 35,38 GWh 44,91 GWh DL 6,7 GWh 22,54 GWh 12,84 GWh 10,4 GWh WRG 15,3 GWh 0,636 GWh 0,041 GWh 17,6 GWh