The requirements for the geological settings needed for the extended Wind-to-Gas concept can mainly be found in the North German Basin [4]. On the other hand, the eastern part of Germany is a pioneer region for renewable energies. Therefore, we decided to conduct this study in the State of Brandenburg. We evaluate in a simplified approach if the coupled concept can play a significant role in a distributed energy system on a regional base using the technology and REU available today. Taking this into account our main questions are as follows:
How many REU are needed to provide about 30% of electricity for the cities of Potsdam and Brandenburg/Havel with 227,000 citizens in total and an electricity demand of about 900 GWh/yearusing the Wind-to-Gas CH4?
What are the energetic costs for coupling the combined cycle plant to geologic dynamic CH4 and CO2 storage?
What is the overall efficiency of such a closed carbon cycle?