Germany sets energy storage capacity record in 2025 despite fewer new systems

Germany added 7.3 GWh of new energy storage capacity in 2025, outperforming the 5.8 GWh of new additions registered in 2024 despite a fall in the total number of battery installations.

The German Federal Network Agency’s energy market data register, which records all generation and storage assets across Germany, reveals 526,172 new storage systems were added in 2025 for a total power output of 3.7 GW. This was below the 561,000 of new battery systems and 4.18 GW of power output added in 2024.

New installations in 2025 brought the total number of energy storage systems operating in Germany to 2,222,454, with gross output of just under 16 GW and usable storage capacity of 25.5 GWh. Around 80% of this was accounted for by photovoltaic home storage systems, while large-scale energy storage accounted for less than a sixth of installed capacity.

Battery storage systems with a capacity of up to 30 kW accounted for almost all new systems registered in 2025, with 524,662 recorded. Total gross output was just under 2.9 GW and capacity was roughly 5.8 GWh.

There was an increase in new installed capacity for the commercial segment compared to 2024 additions. The register shows 1,427 new systems with capacity between 30 kWh and 1,000 kWh were added in 2025, for an increase of around 124 MW/243 MWh. This was up on 2024 when 1,251 systems were added, comprising 110 MW/190 MWh capacity.

Large-scale storage had the lowest number of registrations in 2025, with just 83 recorded, however these systems added up to 667 MW/1,244 MWh of new installed capacity. This eclipsed 2024’s large-scale additions, when 61 new systems were added totaling 520 MW/767 MWh. Germany’s energy market register also suggests more growth on the horizon. The register lists 460 projects with power output greater than 1 MW as “in planning” for a total output of 4.9 GW/10.13 GWh.

From pv magazine Deutschland