The project aims to further develop and optimize a new membrane process for upgrading biogas to methane, whereby the focus is on its potential contribution to climate change mitigation. The company, Ingenieurbüro Buse GmbH, has developed the process and is handling the technical optimization. The IÖW is analyzing socially relevant issues such as environmental performance, as well as the profitability and regional economic impacts of both this new and already existing biogas upgrading processes. The results allow for assessment of the transferability of the new process and the potential contribution of biogas upgrading to sustainable development in the energy system, especially with regard to climate change mitigation.