As a result of increasing awareness towards the topic of climate change and CO2 emissions, the product-specific resource consumption and its CO2 footprint will have an impact on the customers' purchasing decisions in the future. At the same time, the advancing digitalization in industrial production networks enables new potentials for companies to increase energy and resource efficiency and to act flexibly in this respect. To create transparency and to optimize the production process with regard to that, a cross-location production network was set up at the Technische Universitat Darmstadt. A tool for Value Stream Resource Analysis (VaRA) was developed in order to record the input and output resources of the production steps and to determine their degree of digitalization. This provides the basis for the calculation of energy and resource indicators and, for example, the preparation of a Life Cycle Assessment (LCA) or Material Flow Cost Accounting (MFCA) based on the data of the individual process steps of the value stream. In addition, the tool helps to select suitable component marking strategies according to the process steps. As a result, the resource flows within a production network become more transparent and initial improvement potentials can be identified.