Validating the role of batteries in the Swiss energy transition

According to the Swiss Energy strategy 2050, renewable energy recourses should be massively integrated into the power grid with a total annual energy production capacity (without hydropower) in the order of 11.4TWh by 2035. However, the implementation of this strategy faces two main technical challenges: (i) the limited capacity of the grid to accommodate stochastic/distributed power generation and (ii) increased needs of power system reserves. Both challenges can be addressed by the use of distributed energy storage systems like batteries. However, while the installation of these assets into the power grid is a promising solution, their high cost hinders their deployment. 

The Distributed Energy System Laboratory at the EPFL (EPFL-DESL) has managed to overcome above-mentioned technical challenges by developing a control framework capable to properly control battery energy storage systems (BESSs). This methodology has been validated in a pilot project at EPFL, in the frame of the SCCER-FURIES. As a next step, this solution needs to be validated in the real-grid. The grid of Aigle is an ideal site for this since it accomodates stockastic distributed resources that balance the consumption uniting grid conditions of the future.

Carried out as part of the SCCER-FURIES REeL project, the installation of the district-scale battery (1.5 MVA/2.5 MWh) in Aigle was completed this month in collaboration with SCCER-FURIES strategic partners, namely Romande Energie and Leclanché SA. Research activities are kicking for the testing of the abovementioned BESS control framework which should serve to achieve multiple objective such as congestion managment, maximisation of local consumptions and provision of ancillary services to the upper grid. Therefore, this project aims to have a great contribution to the achievement of the national energy and climate targets.

More information on SCCER-FURIES’ partners involvement can be found on the website of Leclanché and photo-gallery from the site, provided by Romandie Energy.