Germany promotes the spread of battery energy storage systems for home

Germany promotes the spread of battery energy storage systems for home.

In Germany, whether in cities or villages, photovoltaic modules can be seen everywhere on roofs and outer walls of buildings. In the basement of this building, there is often a device in the size of a refrigerator-a battery energy storage for at home.

The installed performance of this type of system is generally below 10 kilowatts, which means that the largest part of the electricity requirement can be covered.

A complete set of solar and energy storage systems for at home usually costs several ten thousand euros. Although the price is high, many German families are ready to pay for the pressure of rising electricity prices and to make a contribution to environmental protection and the distribution of green energy by building their energy storage.

A report by the Technical University of Munich in Germany pointed out that, since solar energy itself is an intermittent energy source, excess energy must be stored during the production period 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 increased significantly, most of which are based on lithium-battery energy storage technology.

The German renewable energy industry has grown rapidly since the beginning of this century, and the proportion of new energy generation through wind energy and solar energy in total electricity generation has increased from 3 % to around 45 %.

The average degree of use of wind energy and solar energy in Germany is at the top with 97 % worldwide thanks to the solid German energy storage network.

In order to encourage the public to install energy storage systems, the Federal Government has introduced a number of funding measures, including granting up to 30 % loan subsidies and the use of the costs for energy storage systems to compensate for personal income tax.

BESS, the largest manufacturer of home energy storage in Germany, has developed a technology for users of electric vehicles: users who use the company’s charging stations can share the current generated by their own photovoltaic modules within a certain range with other members, which is equivalent to common Electricity generation devices, charging stations and batteries of electric vehicles are connected to a virtual huge energy storage system.

The users absorb excess green electricity, which not only receives the stability of the network, but also brings advantages.

According to the latest data from the Federal Association of Energy Saving, more than 300,000 households in Germany have installed battery energy storage with an average installed output of around 8.5 kilowatts.

By the end of 2020, almost 70 % of private solar power generation plants in Germany have been equipped with battery energy storage stores, and the installed performance of German household Energy Storage is around 2.3 GW.