Europe’s battery energy storage sector reached a major milestone in 2025, with total installed capacity surpassing 100 GWh following the addition of 36 GWh of new systems during the year, according to SolarPower Europe. The figure represents a near 50% year-on-year increase versus 2024. SolarPower Europe also said the market expansion marks the 12th consecutive year of growth.
Utility-scale dominates new battery installations
SolarPower Europe reported that for the first time, utility-scale battery projects accounted for more than half of all new installations. This share overtook residential and commercial systems, which had previously been the dominant segment. The shift points to a move from earlier distributed deployment toward larger grid-connected projects.
In this utility-scale phase, batteries are increasingly used for system balancing and for managing price volatility linked to renewable generation. SolarPower Europe said the role is expanding at transmission level as wind and solar integration increases. The change in installation mix reflects how new capacity is being added across different parts of power systems.
Forecasts for annual additions and cumulative capacity
Looking ahead, SolarPower Europe expects annual installations to exceed 50 GWh in 2026. It projected that installations could rise further to around 138 GWh by 2030. If those projections are met, cumulative European battery storage capacity could approach 470 GWh by the end of the decade.
The largest markets remain Germany, the United Kingdom, and Italy, SolarPower Europe said. It also cited fast growth from smaller bases in countries including Ukraine and Bulgaria. The association’s figures link regional expansion to rising deployment across member states.
Policy push for faster permitting and grid connections
Despite rapid growth, industry bodies said deployment levels are still insufficient to meet EU long-term energy transition targets. SolarPower Europe called on the European Commission to introduce a dedicated battery storage action plan. The proposal includes faster permitting processes and reduced grid connection delays.
The action plan request also covers stronger investment incentives intended to accelerate deployment across EU member states. SolarPower Europe framed these measures as needed alongside continued market growth. The association’s position was presented in the context of ongoing build-out requirements for storage.
Batteries needed for system stability by 2030
At system level, SolarPower Europe estimated that Europe will require around 200 GW of installed battery capacity by 2030. The estimate is tied to supporting rising renewable penetration and maintaining grid stability. Energy think tank Ember similarly expects batteries to take on a larger balancing role as wind and solar output expands across the continent.
Cost outlook for utility-scale 4-hour batteries
Ember’s analysis highlighted an improving cost position for storage. By 2030, it projected that a 4-hour utility-scale battery system could cost approximately €560/kW. Ember said this would be about 20% lower than the cost of building new gas-fired generation capacity.
The think tank also reported that costs in some emerging projects have already been as low as around €412/kW. Ember’s assessment links the changing economics to faster shifts toward storage investment. The cost trajectory was presented alongside expectations for expanding balancing needs.
Demand flexibility from electric vehicles and heat pumps
Alongside supply-side developments, demand-side flexibility is becoming more significant, Ember said. By 2030, it expects around one in six vehicles in Europe to be electric, with roughly half capable of smart charging. Ember also said heat pumps are expected to play a larger role in shifting household electricity use away from peak periods.
The shift would move consumption toward times when renewable output is higher, Ember added. Taken together, Ember concluded that combining battery expansion with increasing demand flexibility could reduce reliance on fossil fuel-based balancing generation, particularly gas-fired plants. The analysis was described as supporting system stability while enabling deeper renewable integration into Europe’s electricity market.
