6.57 GWh of new energy storage capacity was commissioned in Germany in 2025.
The German stationary energy storage market has entered a growth phase again. According to the latest analyses from the Battery Charts platform run by the Institute for Power Electronics and Electrical Drives (ISEA) at RWTH Aachen University, an estimated 6.57 GWh of new battery capacity was added in Germany in 2025. As a result, the total installed capacity of energy storage systems reached around 24 GWh.
Registrations and data adjustment for 2025
According to ISEA data, by the end of 2025 about 530,000 new battery systems with a total capacity of 5.84 GWh had been registered in Germany. After accounting for delayed registrations (typical of the German reporting system), the total capacity increase in 2025 was adjusted to 6.57 GWh.
Year-on-year, this represents growth of about 8%, i.e. around 500 MWh more than in 2024, when the market slowed down due to a decline in new photovoltaic installations and greater investor caution.
The key figures for 2025 are as follows:
- New energy storage capacity – 6.57 GWh
- Total installed capacity – around 24 GWh
- Number of new installations – around 530,000
- Year-on-year change – +8%
Residential segment weakens despite growth in average capacity
The residential storage segment recorded a decline in 2025. It added 4.19 GWh, which is 6.4% less than the previous year. The main reason was an approximately 25% drop in the number of new rooftop PV installations.
At the same time, the average capacity of a residential storage system increased by 8% to 10.3 kWh. This partially limited the scale of the decline across the entire segment. Residential storage systems still account for the vast majority of new capacity installed in Germany.
Industry and utility-scale storage drive the market
The industrial storage segment performed significantly better, growing by 47% in 2025 and reaching 0.36 GWh of new capacity. More and more companies are investing in batteries to increase self-consumption, reduce peak demand, and stabilize energy costs.
The highest growth rate was recorded in the utility-scale storage segment. In 2025, 1.28 GWh was added, representing an 81% year-on-year increase. According to Battery Charts, this is the result of the first projects being implemented from a large pool of announced utility-scale investments.
Outlook for the coming years
The outlook for the German energy storage market remains positive in the coming years. Almost 9 GWh of utility-scale storage projects have already been preliminarily registered in the energy market register, and grid operators have received connection applications on a much larger scale. Although not all projects will be implemented, low battery prices and favorable market conditions support further sector growth. The German market is also increasingly open to new technologies, as demonstrated by the launch of Europe’s largest energy storage facility based on sodium-ion batteries.