This project studies the optimal transformation of the current Swiss energy supply towards a more sustainable system through the integration of renewable energy sources (RES).

To ensure that the generated electricity matches the consumption on a second-by-second basis, additional stability measures will have to be provided for in future systems featuring a high share of RES. The first phase of the project focuses on local distribution while the second phase studies the problem in the context of the Swiss transmission grid. Simulation and optimization of detailed electricity grid models are used to evaluate alternative RES integration strategies including grid extension, the curtailment of RES energy and the use of storage technology. The goal is the identification of integration barriers and the assessment of operational, technological, environmental, social, economical and logistical aspects for the considered RES integration approaches.

Comparison of PV integration strategies: Usage cost per day for each strategy and combinations thereof (green surface) fitted to the simulated scenarios (blue stars) assuming an average electricity price of c = 55CHF/MWh, a cable degradation cost of pG = 55CHF/(km day) and a storage degradation cost of pS = 70CHF/(MWh day)

More details about the project are available.

The Research Centre for Energy Networks of ETH Zurich (Forschungsstelle Energienetze – FEN) was established to contribute to answering the energy challenges of today and the future towards a more sustainable energy system with a special focus on energy networks by means of independent, credible, applied and interdisciplinary research. The Research Center for Energy Networks (Forschungsstelle Energienetze – FEN) is affiliated with the Energy Science Center.