With its hydroelectric power plants in the Alps and innovative battery projects, Switzerland is contributing to the search for solutions for the efficient, long-term storage of electricity. How to quantify the storage demand? Optimise the energy system operation based on hourly demand / production. ETH Zurich and EPFL want to work with partners from politics, science and industry to push innovative storage and transport solutions for renewable energy carriers. The overall goal is to create a climate-neutral and flexible energy system for Switzerland. Around 20 partners and industrial. Based on current scientific knowledge, leading Swiss researchers consider that where large amounts of energy need to be stored for the medium to long-term, technologies such as compressed air and pumped hydro storage as well as power-to-X systems are favoured in terms of performance. The companies inaugurated the newly expanded project last week in a ceremony last week (24 May), which adds 8MW.