Battery Charts is a development of Jan Figgener, Christopher Hecht, and Prof. Dirk Uwe Sauer from the Institutes ISEA and PGS at RWTH Aachen University. With this website, we offer an automated evaluation of battery storage from the public database (MaStR) of the German Federal Network Agency. For simplicity, we divide the battery storage market into home storage (up to 30 kilowatt hours), industrial storage (30 to 1,000 kilowatt hours), and large-scale storage (1,000 kilowatt hours and above).
This page is the supplementary material of the detailed market analysis in our current publication. The graphics and data on this page are licensed under CC BY 4.0 and may be used with credit to the authors and license (see “Citation” tab).
In total, some gigawatt hours of stationary battery storage is reported by now in Germany. The largest share of this is accounted for by home storage, which carries the overall market. Large-scale storage forms the second largest market ahead of industrial storage. For comparison: The national pumped-hydro storage systems have a total energy of 39 gigawatt hours.
Home storage systems are currently mainly used to increase solar self-consumption. Industrial storage systems are primarily used for solar self-consumption as well as peak shaving for businesses or fast charging of electric vehicles. In recent years, large-scale battery storage systems have been built almost exclusively to provide primary control power. Currently, however, three new areas of application are emerging:
Battery storage systems in most cases offer the possibility to be charged or discharged for more than one hour at full power. Therefore, the sum of cumulative storage power is also smaller than the sum of storage energy. The total power is a few gigawatts. The power is distributed roughly in proportion to the storage energy.
In addition to the cumulative presentation of the storage energy, the monthly additions are also shown. It is easy to see that the trend in new installations is clearly increasing. The current developments of rising electricity prices and the war in Ukraine strengthen the desires for self-sufficiency and for an own PV system including battery storage.
At the beginning of the home storage market, lead-acid and lithium-ion batteries had the highest market shares. Over time, however, lithium-ion batteries have clearly gained market shares and have taken up almost the entire market in recent years.
The commercial storage market also features a majority of lithium-ion batteries. It should be noted, however, that systems for uninterruptible power supply are not subject to registration in all cases and lead-acid batteries are still frequently used here.
The variety of technologies in the large-scale storage market was greatest in the early years of the storage market. In addition to lead-acid and lithium-ion batteries, high-temperature and redox-flow batteries also exist here. Today’s new installations, however, are also predominantly lithium-ion based.
The MaStR also includes planned battery storage systems in part. The majority is accounted for by large-scale storage systems. This is mainly due to the fact that the smaller home storage systems and industrial storage systems are often not reported until they are installed.
The storage systems are distributed throughout Germany. While home storage and industrial storage are aggregated within districts, large-scale storage is presented as individual systems. For home and industrial storage, most of the systems are in the western and southern parts of Germany. On the other hand, the large-scale storage systems do not show a clear distribution.
This website visualizes the MaStR data of the German Federal Netword Agency. The data are available under license dl-en/by-2-0 at the website of the German Federal Network Agency https:// The analyses are based on our own evaluations of the published individual registrations, which are performed to the best of our knowledge.
The figures are interactive and can be customized by clicking on the legend (click: single view | click + ctrl: selection of multiple data series). In addition to the selection on this page, there is also a publicly available dashboard (see section) that allows the selection of individual federal states and battery technologies.
In our estimation, the completeness of the MaStR is now very high among new installations. Although many battery storage systems were not retroactively registered after operation of the MaStR (concerns installations before 2019), the installations in these years were also not too high. For the new installations, we assume a non-notification rate of a few percent.
We present the battery storage systems by commissioning date and not by registration date. This means that the figures for the last 2-3 months in particular may still change somewhat upwards, as registration does not always take place immediately.
Overall, the energy storage installation in Europe increased significantly in 2023. According to the European Association for Storage of Energy (EASE) data, the total installed capacity in 2023 was 13.5GWh, an increase of 93% compared to the previous year. The household storage installation was 9.5GWh, an increase of 109%, accounting for 70%.
In 2023, Germany, the UK, and Italy remained the top three markets in Europe for energy storage installations. According to TrendForce''s consulting data, the new installed capacity in Germany, the UK, and Italy in 2023 is around 6.1/4.0/3.9GWh. T
rendForce predicts that in 2024, the new installed capacity in Germany, the UK, and Italy will be around 7.1/7.7/6.2GWh, with growth rates of 17%/92%/62% respectively.
Germany became the largest energy storage market in Europe in 2023. TrendForce data showing that Germany added about 4GW/6.1GWh of new energy storage capacity in 2023, a year-on-year increase of 124%/116%, with residential storage leading the way (accounting for over 83%/81%).
Additionally, Germany is also the European market with the highest residential storage installations. In 2023, Germany installed 555,000 residential storage systems throughout the year, corresponding to an installed capacity of 5.0GWh, a 166% increase compared to the previous year, accounting for 52.6% of Europe''s total new installed capacity and contributing significantly to the overall market growth.
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