In fact, a major part of the discrepancies between ecoinvent on the one side and the IDEA and IHS Markit data sources on 60 the other side can be directly traced back to the characteristics of its raw data. Since the Gendorf chemical site includes an on-site power plant for supplying both electricity and heat which is not distinguished by the ecoinvent approach, it can be expected that the actual heat and electricity supplied to the processes differs from the ecoinvent assumptions. These assumptions consider the entire energy and fuel inputs to the site including the power plant. Replacing the fuel supply for the power plant in the energy proxy with its heat and electricity production would increase the electricity input of the proxy approach and decrease the heat input of the proxy approach because currently, all the fuel input is assumed to be heat. In part, this may be caused by an incomplete energy balance of the Gendorf site since sales of electricity to the grid are not reported, but are possible according to the registration of the on-site power plant (as described in more detail before).