About Swiss grid-side energy storage power station
Utility EWS AG and developer MW Storage have completed the expansion of a battery energy storage system (BESS) project in Switzerland from 20MW to 28MW, making it the country’s largest.
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About Swiss grid-side energy storage power station video introduction
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6 FAQs about [Swiss grid-side energy storage power station]
What is the future of electricity storage in Switzerland?
One important pillar of this strategy is the further development of electricity storage capacity in Switzerland. In the next years, three large-scale pumped hydro storage power plants will be connected to the grid. The first, the Limmern pumped storage plant (1 GW), should become operational in 2016.
Which energy storage projects have been commissioned in Switzerland?
Axpo commissioned its BESS in February this year while utility Thurplus commissioned a 3MW system in September last year. But Switzerland was the location for one of the largest energy storage projects commissioned in recent years, a 20GWh pumped hydro energy storage (PHES) unit which started operations in June 2022 in the Canton of Valais.
Does Switzerland support pumped storage operators?
Despite the government’s objectives defined in the Energy Strategy 2050, there is currently no direct support via subsidy for pumped storage operators in Switzerland.
How many pumped hydro storage plants will be connected to the grid?
In the next years, three large-scale pumped hydro storage power plants will be connected to the grid. The first, the Limmern pumped storage plant (1 GW), should become operational in 2016. Together with the existing storage plant, the capacity will be increased from around 480 MW to 1480 MW.
How many pumped hydro storage plants are there in Switzerland?
In the past, a total of 14, mostly small sized pumped hydro storage plants, were built, the last of which was commissioned in 1990. However, the combined capacity of these plants only amounts to 1380 MW contributing to approximately 4.4% of the total electricity produced in Switzerland.
What is the most powerful battery in Switzerland?
In 2012, the battery was connected to the grid and it is still the most powerful of its kind in the Swiss distribution network. It consists of 10,368 battery cells, similar to the ones used in electric cars. In 2015, the EWZ, the electric power company of the city of Zurich, installed a lithium-ion battery with a capacity 719 kWh.


