Driven by the expansion of renewable generation capacity and the progressing electrification of other energy sectors, the electrical grid increasingly faces new challenges: fluctuating supply of renewable energy and simultaneously a changing demand pattern caused by sector coupling. However, the integration of non-electric sectors such as gas, heat and e-mobility enables more flexibility options. This project aims to investigate the effects of sector coupling on the electrical grid and the benefits of new flexibility options. Like the previous project open_eGo, this work will follow the open-source and open-data principles.