![]() ![]() We find that much more wind than solar power is used, while the use of an intermediate battery electric storage system has little effects. ![]() The optimum system layout and operation depend on the availability of natural resources, which vary between locations and years. In this article, we analyze fully renewable Power-to-Methane systems using a high-resolution energy system optimization model applied to two regions within Europe. The generation of synthetic natural gas from renewable electricity enables long-term energy storage and provides clean fuels for transportation. We compare the techno-economic performance of high temperature co-electrolysis with steam methane reforming as the conventional synthesis gas production route. ![]() Remarkably, several locations with vastly different resources and layouts lead to a similar techno-economic performance of the investigated system. The lowest costs are found in Lincolnshire with 0.24 €/kWh and the highest costs in Central Slovakia with 0.49 €/kWh differing by more than a factor of two. We discuss the techno-economic competitiveness and analyze potential leverage points for improvement such as an enhanced flexibility. For this purpose an energy system model with a spatial resolution of 277 regions within Europe is set up, which facilitates the analysis of intermittent renewable electricity generation, a battery storage device and the innovative high temperature co-electrolysis. In this article, we analyze the optimal layout and operation of distributed electrolysis sites powered exclusively by local renewable energy sources and a local battery storage device for current techno-economic parameters. High temperature co-electrolysis can be a promising technology for the transformation of energy systems as it enables sector coupling and carbon dioxide utilization. ![]()
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