Technical FAQs 4

How does energy storage work in the EU?

The main energy storage method in the EU is by far 'pumped storage hydropower', which works by pumping water into reservoirs when there is an electricity surplus in the grid - for example on a sunny or windy day - and releasing it when more energy is needed.

How many battery energy storage systems did Europe1 install in 2024?

In 2024, Europe¹ installed 21.9 GWh of battery energy storage systems (BESS), marking the eleventh year of record-breaking annual additions since 2013, when our records began. The latest additions take the total running European battery fleet to 61.1 GWh at the end of 2024.

How can solar PV and battery storage be used in Germany?

According to International Energy Agency (IEA), in Germany, storage deployment is encouraged through innovation auctions, which reward the combination of renewables and storage. All successful bids in 2021 and 2022, totaling over 1 GW of installed capacity, were projects combining solar PV with battery storage.

What is the European energy storage inventory?

In March 2025, the Commission launched the European Energy Storage Inventory, a real-time dashboard that displays energy storage levels across different European countries. It is the first European-level tool of its kind and offers energy storage data across a full range of technologies.

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