Germany has promoted the dissemination of household
battery energy storage systems.
In Germany, photovoltaic modules can be seen on the roofs and exterior walls of buildings, whether in cities or villages. In the basement of this building, there is usually a refrigerator sized device - storing battery energy at home.
The installation performance of this type of system is usually below 10 kilowatts, which means it can cover the maximum portion of electricity demand.
A complete solar and energy storage system typically costs thousands of euros. Despite the high prices, many German households are prepared to pay the price for the pressure of rising electricity prices and contribute to environmental protection and the distribution of green energy by establishing energy storage.
A report from the Technical University of Munich in Germany points out that due to the intermittent nature of solar energy, it is necessary to store excessive energy during production to compensate for fluctuations caused by factors and weather.
In recent years, the number of patent applications for electrochemical energy storage technology in Germany has significantly increased, with the majority based on lithium battery energy storage technology.
Since the beginning of this century, the renewable energy industry in Germany has developed rapidly, with the proportion of new energy generated through wind and solar power increasing from 3% to around 45% of total electricity generation.
Due to Germany's stable energy storage network, the average usage of wind and solar energy in Germany accounts for 97% globally.
In order to encourage the public to install energy storage systems, the federal government has proposed multiple financing measures, including granting up to 30% loan subsidies and compensating personal income tax for the cost of using energy storage systems.
Users absorb excess green electricity, which not only provides network stability but also brings advantages.
According to the latest data from the Federal Energy Conservation Association, over 300000 households in Germany have installed battery energy storage, with an average installed output of approximately 8.5 kilowatts.
By the end of 2024, nearly 80% of private solar power plants in Germany had been equipped with battery storage stores, and the installation performance of national energy storage in Germany was about 2.3 GW.
