2017 update: 188 MW distributed storage with 350 MWh capacity.

Germany had around 68 MW of installed solar photovoltaic (PV) battery storage capacity at end of January 2016, a government-commissioned study showed.

A total of 34,000 PV battery storage systems, with an average usable capacity of 2 kW, were installed by 31 January, according to the study by Aachen-based RWTH university. Installations increased sharply last year, when almost every second new PV project was fitted with a battery system. Germany added around 1.5 GW of solar PV generation capacity last year.

Battery systems prevented around 78.5 GWh of solar generation from being fed to the grid last year, the study showed.

Around 27% of installed PV storage systems are lead-acid batteries, while 73% are lithium batteries. The latter account for 67% of usable battery storage capacity, with lead-acid batteries making up the remainder. More than 90% of PV storage systems installed in the fourth quarter were lithium batteries, as falling prices, higher efficiencies and longer lifespans of lithium systems have supported their utilization, the study said.

Lithium-ion Battery