Dresden 2020 – scientific programme

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SOE: Fachverband Physik sozio-ökonomischer Systeme

SOE 2: Energy Systems (joint SOE/DY/AKE)

SOE 2.6: Talk

Monday, March 16, 2020, 10:45–11:00, GÖR 226

The role of transmission expansion in a cost-optimal highly-renewable European power system — •Fabian Hofmann — Frankfurt Insitute for Advanced Studies, Frankfurt, Germany

The transition towards a highly renewable European power system which is both cost-efficient and resilient requires detailed planning of infrastructure needs as well as a comprehensive trade-off between different technologies. Especially against the backdrop of high wind power potentials around the North Sea, the role of expanding the transmission system becomes increasingly important. The highly-refined open-source model PyPSA-EUR is used to showcase how different levels of transmission expansion impact the optimal setup of the European power system. It is shown that within the range of the first 25% total transmission expansion, the optimization opens up bottlenecks which suppress the exploitation of sites with good renewable resources. This leads to a strong decrease of curtailment, total system cost and peak line loading. By using flow tracing methods, it is further broke down how the transmission expansion changes the interplay of storage and generation technologies and enables to shift the optimal setup towards a more centralized and less storage based system.