The energy transition requires a broad and transparent discussion on how quickly and at what cost the 100%h supply with renewable energies is to be achieved. The choice of expansion concepts for the generation, transport and storage of energy depends on this, as these are the main factors determining the costs and duration of the energy transition from a technological and economic point of view. The acceptance of the population affected by the construction measures can have a cost-reducing and accelerating effect in the positive case, but also a cost-driving and delaying effect in the negative case. The overall purpose of the project was to map the complex interplay of technological-economic, socio-ecological and political-legal conditions of electricity supply using a simulation and optimisation model and, on this basis, to model development paths for a 100% renewable electricity supply. The aim of the project was to integrate socio-ecological key factors and success factors of participation into the "renpass" electricity market model of the University of Flensburg, which had previously been purely technically and economically oriented. This in turn should enable the presentation of differentiated development options of the energy transition using the example of individual hotspot regions for a 100 % renewable electricity supply in 2050. This methodological development took place in close consultation with practice partners and a scientific project advisory board.