Moreover, the rather small number and limited diversity of individual chemical processes at the Gendorf site further contribute to an energy demand profile that is likely not representative for the entire chemical sector. A specific contributor to this is the highly electricity-demanding electrolysis of rock salt at a typical electricity consumption of 6 MJ kg -1 per rock salt input , which is much higher than the median electricity consumption per chemical according to IDEA (0.9 MJ kg -1 ) based on the datasets used in figure 2. In addition, the energydemanding breakdown of long-chain molecules, complicated multi-step synthesis processes, or heat-demanding purification processes of chemicals with very similar physical properties are largely absent from the portfolio of the Gendorf site. For example, the steam cracking of hydrocarbons into ethylene is taking place off-site, while the Gendorf site then only uses the ethylene that is supplied by pipeline. Finally, the technically straightforward but electricity-demanding production of liquefied industrial gases takes place at the site and further increases the electricity consumption at Gendorf. Taking into account all these factors as well as the size of the plant, it appears plausible that the raw data for the chemical proxy approach has a limited representativeness for the entire sector.