Smart and economical storage for solar power
Sonnenbatterie is more than just a battery. It is a smart storage system that automatically maximises self-consumption in your household.
The combination of a PV system and Sonnenbatterie enables you to meet most of your electricity needs yourself. That cuts your annual electricity bill by up to 80 per cent. It also makes you independent and protects you against electricity rate hikes.
Sonnenbatterie gives you maximum security and “Made in Germany” quality. The extra-long service life of 10,000 charge cycles makes your household fit for the future and gives you long-term investment security. With all this and an attractive purchase price, Sonnenbatterie gives you unique value for money. Thousands of households are already benefiting from Sonnenbatterie systems, making Sonnenbatterie the German market leader for storage systems.
For any type of residence – single-family, duplex or multi-unit – Sonnenbatterie is always the right power storage system
The size of the Sonnenbatterie can be adapted to the specific needs of the household concerned. The various models cover the full range from single-family dwellings or duplexes to multi-unit dwellings, all with the highest levels of quality and convenience.
The Sonnenbatterie eco 2 entry-level model has a storage capacity of 2 kWh. The capacity increases in steps of 2 kWh to a maximum of 16 kWh with the Sonnenbatterie eco 16 model. This ensures that the Sonnenbatterie can provide maximum autonomy to protect the household against rising electricity rates. In addition, with Sonnenbatterie you get fully usable storage capacity. There is no difference between the rated capacity and the usable capacity, so 4 kWh on the spec sheet means 4 kWh in practice.
The key factors for selecting the right Sonnenbatterie are the amount of electricity available from the PV system and the actual household electricity usage. The appropriate storage capacity also depends on whether your goal is optimal cost-effectiveness or the greatest possible autonomy.
Your own power day and night – affordable and reliable
The Sonnenbatterie system ensures that you get the greatest possible benefit from your PV system. A household with a Sonnenbatterie and a PV system can meet 70 to 80 per cent of its electricity needs with self-generated electricity over the course of a year, and as much as 100 per cent in the summer.
With this high level of self-consumption, you can dramatically reduce your annual electricity costs year after year. At current electricity rates, a household with an annual usage of 3,500 kWh and 75 per cent self-consumption can save roughly €750 per year.* So you need not fear rising electricity rates with a Sonnenbatterie system; in fact, the higher the rate, the more you save. The cost of the electricity you generate yourself is fixed for the next 20 years.
Thanks to the low acquisition cost of the Sonnenbatterie, your capital outlay remain reasonable and the system pays for itself fairly quickly. During the 20-year lifetime of the Sonnenbatterie, you therefore save money in addition to generating your own electricity.
The long service life of the Sonnenbatterie eco makes the cost/benefit ratio even better, reducing the cost of stored power to as little as 17 cents per kWh (including VAT). Combined with the cost of a PV system, you can generate, store and user your own power at lower cost than taking your power from a utility company.
You may also be eligible for government financial assistance for up to 30 per cent of the cost of the storage system when you buy a Sonnenbatterie. That makes your smart storage system even more economical. Furthermore, Sonnenbatterie gives you a 10 year warranty on the battery cells.
In addition, the integrated smart meter function of the Sonnenbatterie, with simple presentation on the display or with the free app, gives you a clear view of your electricity usage. That creates transparency and ultimately helps you reduce your electricity costs.
In short, a Sonnenbatterie is a reliable source of self-generated electricity and pays for itself. That's truly affordable independence.
* Based on the following assumptions: 3,500 kWh annual usage, Sonnenbatterie eco 6 system, 5 kWp PV system, 29 eurocent/kWh electricity rate