Based on energy statistics and reports on the energy use in the chemical industry two modelling proposals are drawn. The basic implementation proposal describes a graph based on the IEA energy balance and technological specifications that are already available in the ETM. The proposal for the advanced implementation describes additions to the basic graph with respect to the production of heat and the energy consumption for non-energetic purposes. Preconditions, including maintainability, adaptability and relevance in an international context, serve as guideline for the modelling proposal and the final implementation. Since the advanced implementation requires further research and is quite country-specific, the basic graph is ultimately implemented in the ETM.