From ESS News
Germany’s official registry of energy installations recorded nearly 2 million battery storage systems in operation at the end of the first half of 2025. This figure, now unofficially but safely surpassed into July , includes a gross power capacity of 14.535 GW and a usable storage capacity of nearly 22.1 GWh.
PV home storage systems constitute the majority of these installations, with 1.967 million small battery storage units (up to 20 kW) accounting for 11.5 GW of gross power and almost 18.3 GWh of usable capacity.
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