Energy

Start of funding for solar power battery storage in private households

The new funding program for the use of battery storage has been available since yesterday. When purchasing such systems, with the help of which photovoltaic systems can be better integrated into the power grid, you now receive a subsidy of up to 30 percent or a low-interest KfW loan. The Energy & Environment Center Allgäu eza! and the Allgäuer Überlandwerk GmbH (AÜW) with the EU-funded project “AlpStore”. Currently the eza! and AÜW selected suitable households for a practical test with battery storage systems as part of this cross-border initiative.

In the Allgäu there are more and more homeowners who produce their own electricity with photovoltaic systems. It is financially worthwhile, but makes ecological sense and gives a good feeling. “The problem is,” explains Felix Geyer from eza!, “that solar power is not always available when it is needed, which limits self-consumption to around 30 percent.” However, increase solar power significantly. Parts of the green electricity generated during the day can thus be used in the evening or at night.

Solar batteries on the market are still quite expensive

In the meantime, there are also some everyday battery systems on the market. “However,” says Geyer, “these systems are still quite expensive.” Depending on the technology, a battery storage system designed for a four-person household costs between 6,000 and 20,000 euros. The KfW banking group and the federal government therefore want to create incentives to promote the spread and further technical development of storage. This year alone, 25 million euros will be made available, in particular for low-interest loans and repayment grants. Detailed information on funding can be found in an older article on this topic.

Eligible investments under the KfW support program include the construction of a new photovoltaic system in connection with a stationary battery storage system and the retrofitting of an existing PV system with such a system, provided the PV system was installed after December 31, 2012. “That’s a good signal,” emphasizes eza! Managing Director Martin Sambale. “Because the success of the energy transition also depends to a large extent on how renewable energy sources can be integrated into the existing energy system. And the battery storage systems play an important role in this – also to relieve the power grids.”

EU project “AlpStore” for solar power storage

Regardless of the new KfW funding program, eza! and AÜW have been involved in the cross-border project “AlpStore” since July 2012, which researches the storage of electricity from renewable energies and tests it in practice in pilot households. In Kempten and Sonthofen, too, suitable test households are selected and equipped with battery storage.

“We want to collect practical empirical values ​​in a one-year test phase,” explains Felix Geyer and expects important findings for the work of eza!. “We want to be able to advise the citizens of the Allgäu as well as possible about the advantages of the different storage systems.” At the same time, he points out that battery storage can only be part of the larger overall concept. “In order to implement the energy transition, many technologies are certainly needed,” says Geyer. “It is therefore important to bring the possibilities and limits of all storage technologies – including battery storage – into the general discussion.”

Craftsman to install electricity storage

Are you now interested in increasing your own consumption of the existing photovoltaic system? On this page you will find competent solar craftsmen who can make you an offer right away. Or do you want a calculation and an offer for a photovoltaic system right away?

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