Germany adds almost half a million battery systems in nine months

Battery storage is booming in Germany, with almost half a million systems brought online in the first nine months of 2026, according to the country's solar industry association.

The new systems have a combined storage capacity of 8.2 gigawatt-hours, up 91% from the same period last year, BSW-Solar said. 

Around 493,000 installations had been registered by October 12, a figure the association expects to rise to 534,000 once late reports are included. It forecasts more than 10 gigawatt-hours of new capacity for the full year.

For comparison, 8.2 gigawatt-hours is roughly equivalent to the electricity a city the size of Munich consumes in just under half a day.

Growth has been driven largely by large-scale battery systems, with the number of new installations rated above 1 megawatt rising from 63 to 220. Their combined new storage capacity more than quadrupled from 0.9 to 3.8 gigawatt-hours, overtaking home battery systems, which added 3.2 gigawatt-hours.

Battery storage plays an important role in the energy transition by helping to balance fluctuations in electricity generation from renewable sources.

"Battery storage is becoming a driver of growth and efficiency in the energy transition," BSW-Solar managing director Carsten Körnig said, adding that the technology could help save billions in costs.

However, the association said much faster expansion was needed, with annual additions by 2030 reaching four to five times the 10 gigawatt-hours expected this year.

It called for regulatory reforms to make it easier to operate batteries alongside solar and wind farms and at electricity consumption sites.