We are pleased to present the inaugural edition of the EU Battery Storage Market Review, a new publication that complements our well-established annual European Battery Storage Market Outlook released every summer. With this report, SolarPower Europe strengthens its market intelligence offering for a sector that is rapidly becoming indispensable to Europe’s energy transition.
This report comes at a defining moment. In 2025, Europe’s battery storage market entered a new phase of scale and maturity. With 27.1 GWh of new capacity installed, the European Union achieved its 12th consecutive record-breaking year of growth, confirming battery storage as the fastest-scaling clean energy technology in the region.
At the same time, the structure of the market has fundamentally changed. For the first time, utility-scale battery systems delivered most of the newly installed capacity. Behind-the-meter storage has become a standard feature of new residential solar systems in leading EU markets, while large-scale batteries are now increasingly planned together with solar power plants or developed as standalone assets.
The 45% year-on-year growth recorded in 2025, marking a return to faster expansion after the slowdown observed in 2024, could not have come at a more critical moment. Solar power has carried most of the responsibility for expanding the share of low-cost renewables to approach half of EU electricity generation in 2025, yet annual solar capacity additions declined for the first time in a decade. With grid expansion lagging renewable deployment, flexibility has emerged as the key enabler of further progress. Batteries are now stepping in to deliver flexibility rapidly and at scale, stabilising grids, reducing curtailment, supporting security of supply, and lowering system costs. The strong expansion of large-scale batteries in 2025 shows that the technology is mature, investors are ready, and the system value of storage is clear when market frameworks are aligned.
Yet this record year must be seen in its full context. Despite a tenfold expansion of the EU battery fleet since 2021, reaching more than 77 GWh today, Europe remains far from where it needs to be. To ensure the energy system can meet its 2030 targets, the EU must repeat this tenfold growth achievement once again, now scaling battery storage towards 750 GWh within the next five years. Current annual deployment levels, while encouraging, are still insufficient to reach that goal.
Read the full report here.
