Electricity storage: Current funding programs in Bavaria, Baden-Württemberg and Saxony

According to a statement from the Bavarian Ministry of Economic Affairs, the Bavarian PV storage program is to be continued this year. According to Minister Hubert Aiwanger, 73,000 applications have been received in Bavaria so far, which is impressive proof that the citizens want to help shape the energy transition. “Since the acquisition costs for battery storage have fallen but electricity prices have risen, self-consumption of PV electricity with the help of subsidized battery storage will continue to be worthwhile,” Aiwanger is certain.

However, due to the high demand, the funding conditions are now being adjusted: From February 2022, the specified minimum capacity for the battery storage system will be 5 kWh (or 5 kWp minimum output for the associated PV system). A grant of €500 will then be granted for this. For each additional kWh of capacity, the subsidy increases by €75.

Aiwanger would like the federal government to launch a comparable program nationwide. He wanted to approach the new Federal Minister of Economics Habeck. As a result, the Bavarian program could be switched to the federal program.

The formal adjustment of the funding guidelines can only take place afterwards. The funding conditions mentioned on the application platform and in the updated information sheet S from February 1, 2022 are therefore decisive for all applications from February 1, 2022.

Saxony promotes battery storage and charging infrastructure

The Saxon State Ministry for Energy, Climate Protection, Environment and Agriculture will also continue its Storage Funding Guideline (FRL Speicher/2021) in 2022. The focus continues to be on investments in larger battery storage and charging infrastructure for electromobility in connection with photovoltaic systems. At the same time, since the funding guideline was amended in 2021, heat storage tanks have also been funded. This is intended to support self-consumption of climate-friendly solar energy. Funding applications can be submitted from February 14, 2022 via the funding portal of the Saxon Development Bank – Development Bank (SAB).

Investments in rechargeable stationary storage systems for solar energy are funded as new investments, replacement investments or expansions. According to the ministry, this also applies to electricity storage in connection with stationary charging infrastructure for electric vehicles. Lead-acid batteries are not supported. In addition, investments in stationary seasonal heat storage can receive support.

In the case of conventional electricity storage, the subsidy amount includes a base amount of €500 plus a power amount of €200 per kWh of usable capacity. For the charging infrastructure for electric vehicles linked to the electricity storage system, the grant is €400 per AC charging point and €1,500 per DC charging point. The subsidy for heat storage is 250 €/m² water equivalent (usable storage volume) as a fixed amount per individual system. The combination of electricity and heat storage is possible and must be submitted in one application. Funding can be granted if the total donation is more than 2,500 euros; the maximum amount of funding is set at 50,000 euros.

Because the solar storage systems have meanwhile been successfully launched on the market, the storage subsidy in its current form will no longer be continued once the funds that are still available have been approved.

Baden-Württemberg: Up to 50% subsidy for PV systems and battery storage

Anyone who has a photovoltaic system installed on the roof as part of a comprehensive energy renovation can receive a state subsidy of up to 50% in Baden-Württemberg. According to the “Future Old Buildings” information program funded by the Baden-Württemberg Ministry of the Environment, there are also funds to the same extent for solar power storage.

The basis is the second stage of federal funding for efficient buildings (BEG), which came into force in July last year. With it, a hitherto little-known but attractive alternative to the feed-in tariff for solar systems has emerged through the Renewable Energy Sources Act (EEG). However, the following should be noted: If owners use this federal subsidy, they must waive the EEG feed-in tariff in return. Zukunft Altbau therefore advises that experts should check in individual cases which funding is more lucrative.

The condition for the BEG subsidy for the photovoltaic system is that a certain energy standard of the residential building is achieved after the renovation. The higher the so-called efficiency house standard, the more funding is possible. Individual renovation measures such as thermal insulation, replacing windows or a new heating system are usually not enough.

Funding example: If homeowners renovate their old building to the most energy-saving Efficiency House 40 standard, they receive a BEG subsidy of 45% of the total investment with a maximum eligible cost of €120,000. The subsidy increases to 50% and eligible costs of €150,000 if at least 55% of the heating and cooling of the building is covered by renewable energies, which is usually the case in buildings of this efficiency class anyway. For a photovoltaic system with twelve kilowatts of installed capacity, which currently costs around €20,000, a grant of €10,000 is possible in this context – as long as the maximum possible eligible costs are not exceeded.

“If the owners use the BEG subsidy, however, the monthly feed-in tariff through the EEG is no longer applicable,” explains Dieter Bindel from the Building Energy Advisory Association GIH. “The feed-in tariff has so far contributed to part of the refinancing of the solar power system. The system owners feed the portion that cannot be consumed themselves with great profit into the power grid and receive remuneration for it from the grid operator.” However, since the feed-in tariff for new systems continues to fall, the importance of the feed-in tariff is continuously decreasing. Currently it is not even cost-covering anymore.

Funding the photovoltaic system via the BEG as an alternative is not always automatically more profitable. This is only the case if the subsidy is higher than the expected EEG remuneration from the excess solar power fed into the grid. As a rule of thumb, the higher the self-consumption of solar power, the lower the sum of the EEG remuneration. The BEG funding is then all the more worthwhile.

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