On the path to climate neutrality, Austrian Federal Railways (ÖBB) have set the goal of integrating environmental impacts caused by products and services into the procurement process. The model presented in this session, which was developed in cooperation between ÖBB and Graz University of Technology, enables a product-(or service-)specific calculation of the environmental impacts caused by production, construction and use phase in the context of (public) procurement. These environmental impacts are monetised and integrated into the Total Costs of Ownership (TCO). The sustainable “next-generation” train technology can therefore already be evaluated in the design process and compared to each other. Is it better to use hydrogen powered trains or battery driven? What impact has this or that way of implementation? Because not only the resulting technology will be considered in the procurement processes of the rail operators but also the CO2 emissions of the complete lifecycle of the next train.