Germany’s Battery Storage Capacity Grows Fivefold in Five Years

Stationary battery storage systems in Germany have expanded more than fivefold over the past five years, with over 2.4 million units now in operation, most paired with photovoltaic systems. Total storage capacity exceeds 25 gigawatt-hours, sufficient to meet the daily electricity needs of more than three million two-person households.

Market Trends in 2025

In 2025, approximately 600,000 new battery systems were installed, adding roughly 6.5 gigawatt-hours of capacity—a 5 percent increase from the previous year. Residential battery demand declined slightly, while commercial and utility-scale systems experienced substantial growth, more than doubling in some cases. Newly installed commercial storage recorded around 30 percent capacity growth.

Outlook for 2026 and Policy Recommendations

Further expansion is expected in the utility-scale segment, while residential uptake will depend on regulatory developments for photovoltaic and heat pump integration. To maximize the impact of storage on the electricity system, grid connection procedures should be streamlined, and network fees should incentivize system-supportive operation. Digitalization and effective integration into grid management processes are essential to fully leverage the potential of storage systems in supporting the energy transition.