Europe has record battery storage capacity growth in 2024 but expansion slows

New battery storage installations last year in Europe came in at an all-time high 21.9 GWh in capacity, though the leap wasn’t as impressive as in the previous years. The total reached 61.1 GWh. “If Europe has already entered the solar age, the battery storage age is just beginning,” said Walburga Hemetsberger, CEO of SolarPower Europe, which issued the annual report.

Europe marked the eleventh consecutive year of record-breaking battery storage installations – in capacity terms, the addition was 21.9 GWh. According to SolarPower Europe’s update, the new capacity was 15% bigger than in 2023, after effectively doubling for several years in a row.

The battery fleet ended December at 61.1 GWh. The growth rate in 2024 was 56%, compared to the 94% registered one year before.

The region that was tracked consists of the European Union, United Kingdom and Switzerland. The EU alone began 2025 with 18.5 GWh in battery storage capacity.

“If Europe has already entered the solar age, the battery storage age is just beginning. With solar energy mainstreaming across the continent, now is the time for European decision makers to put batteries at the centre of a flexible, electrified, energy system,” the organization’s Chief Executive Officer Walburga Hemetsberger stated.

She urged the European Commission to double down on its efforts and adopt an action plan as part of a broader energy system flexibility package. “The recent electricity outage in the Iberian Peninsula is a stark reminder of why this is important,” Hemetsberger pointed out.

BESS projection puts EU likely below 2030 target

In the most likely scenario for 2025, 29.7 GWh of battery storage will be installed this year, translating to a 36% annual growth in new capacity and 49% in total. The report anticipates a sixfold increase to 118 GWh added in 2029. It would bring the entirety of battery energy storage systems (BESS) to 399 GWh, of which 334 GWh in the EU.

However, it is far below the levels required to meet flexibility needs in a renewables-driven energy system, the annual report’s authors warned. A study showed that the EU needs 780 GWh by 2030 to fully support the transition.

This year the share of the new front-of-meter BESS, in the utility scale segment, is seen at 55%, against last year’s 40%. The absolute level would nearly double. As for behind the meter, commercial and industrial (C&I) systems grow to 12% from 10% of the new fleet while residential installations decline from 55% to 33% in 2025.

Drop in power prices from crisis levels faded appeal of battery storage capacity

Residential battery deployment declined by 11% in 2024 after years of rapid growth. The report attributes it to the drop in electricity prices when the energy crisis subsided, the removal or reduction of subsidies in key markets and a parallel decline in the deployment of residential solar power units.

Home batteries account for 57% of the whole cumulative level.

Large-scale grid batteries surged by 79%, marking a turning point for utility-scale storage.

C&I installations grew 17% and remain below their potential, holding at one tenth of the whole capacity for several years now. Companies in the segment generally invest in battery storage to maximize self-consumption from on-site photovoltaics, avoid peak demand charges and reduce reliance on backup diesel generators.

Additionally, solar and storage allow businesses to meet corporate sustainability targets by reducing carbon footprint of operations. Lastly, the electrification of production processes, heating, and transport fleets is driving unique use cases and a need for storage.

Spain lags but seen rebounding, reaching top five in 2025

The top growers and their positions in the chart were the same as in 2023: Germany (6.2 GWh), Italy (6 GWh), the United Kingdom (2.9 GWh), Austria (1.1 GWh) and Sweden (1 GWh). Together they had a 78% share in both new and cumulative installations.

Germany added slightly less on an annual scale than in 2023 amid a drop in newly installed residential units. Italy’s home battery segment also decreased, but the large-scale segment’s capacity surge brought the market to new heights. The UK experienced a temporary slump due to project delays at the large-scale level.

Last year Spain added less than 250 MWh in battery storage capacity, making it the 14th-biggest market in Europe. Overall it reached 1.7 GWh, of which 90% were small-scale systems.

The country’s new battery installations were 41% lower than in 2023. The Spanish market has been declining since 2022, but it is expected to enter the top five this year, with 1.3 GWh, amid a utility-scale segment’s revival.

BESS market requires level playing field

SolarPower Europe said the authorities need to encourage the participation of hybrid projects of solar and BESS in renewable energy auctions.

“Contracts for difference must be settled based on energy production rather than energy injection. This will allow the asset operator to receive the CfD for the PV asset while generating additional market-based revenues from the BESS. These extra revenues will eventually lead to lower bids from developers and reduce the support costs for society,” the document reads.

The EU must ensure transmission system operators (TSOs) procure balancing services in market-based procedures in which batteries can compete on a level playing field, the organization added. Some EU markets still rely on bilateral contracts that limit fair competition and exclude smaller storage assets, it underscored.