Battery storage for photovoltaic systems: More independence for your home
With a battery storage system for your photovoltaic installation, you can use your solar power even when the sun isn't shining and become more independent of rising electricity prices. Our product range includes battery storage systems from leading manufacturers such as BYD, Huawei, Sungrow, SolarEdge, Dyness, and many more. Furthermore, benefit from attractive complete storage packages including compatible inverters and accessories.
Battery storages for photovoltaic systems – higher self-consumption and independence
Battery storage systems are a valuable addition to any photovoltaic system, as they allow self-generated solar power to be stored and used independently of time. Instead of feeding surplus energy into the public power grid, the stored electricity can be used later in the household – for example in the evening or at night. This increases self-consumption, reduces long-term electricity costs, and enhances independence from energy suppliers.
Modern battery storage systems for photovoltaic installations impress with high storage capacities, intelligent energy management systems, and long service life. Especially for residential applications, battery storage offers an efficient way to make the most of a PV system and design it for the future.
In our online shop, you can buy battery storage systems that are optimally matched to different system sizes and requirements. Combined with suitable solar panels and a compatible inverter, this results in a powerful and modern photovoltaic system for your home.
Which battery storage system should you buy? – The most important selection criteria
Choosing the right battery storage system depends on several factors. Key considerations include your annual electricity consumption, the output of your photovoltaic system, and the goal of energy storage – such as maximizing self-consumption or increasing independence from the grid.
When buying a battery storage system, pay particular attention to:
- usable storage capacity in kWh
- the power output of the storage system
- compatibility with the inverter
- expandability and modularity
- quality, warranty, and manufacturer
An optimally sized battery storage system ensures that as much self-generated solar power as possible can be used in the household without the storage being regularly over- or undersized.
Storage capacity and system sizing – how large should a battery storage system be?
The capacity of a battery storage system is specified in kilowatt-hours (kWh) and indicates how much electrical energy can be stored. For single-family homes, battery storage systems with 5 kWh, 7 kWh, or 10 kWh are particularly common. Larger systems are especially suitable for households with high electricity consumption or in combination with heat pumps and electric vehicles.
The right battery size depends on several factors, including:
- annual household electricity consumption
- the installed capacity of the PV system
- the desired level of self-consumption
- individual usage behavior
A battery storage system that is too small cannot fully absorb surplus solar energy, while an oversized system leads to unnecessary costs. Balanced system sizing is therefore particularly important.
Types of battery storage systems for photovoltaic installations
Lithium-ion battery storage systems
Lithium-ion battery storage systems are the standard choice for residential applications today. They offer high energy density, excellent efficiency, and a long service life. Thanks to modern cell technologies, these storage systems are highly efficient, low-maintenance, and space-saving.
Modular battery storage systems
Modular battery storage systems consist of multiple battery modules and can be expanded flexibly. They are particularly suitable for households where electricity demand may increase in the future, for example due to the use of an electric vehicle or a heat pump.
Battery storage systems and inverters – perfectly matched
For reliable and efficient operation, battery storage systems and the inverter must be technically compatible. Especially hybrid inverters allow direct connection of the battery and intelligently manage the energy flow between solar panels, storage, and household consumption.
Anyone planning a future-proof photovoltaic system should already ensure battery compatibility when selecting the inverter.
High-quality battery storage systems from renowned manufacturers
Quality plays a crucial role when purchasing a battery storage system. High-quality energy storage solutions offer high cycle stability, reliable charge and discharge performance, and long warranty periods of up to 10 years or more.
Our range includes battery storage systems from well-known manufacturers recognized for modern storage technologies, safety, and reliability – ideal for residential photovoltaic systems.
Buy battery storage systems online – your advantages
When you buy battery storage systems online, you benefit from a wide selection, transparent comparisons, and convenient delivery. Our photovoltaic online shop offers you:
- high-performance battery storage systems for residential PV installations
- modern lithium-ion battery storage solutions
- modular and expandable storage systems
- attractive prices and detailed product information
This makes it easy to find the right battery storage system for your home and optimally expand your photovoltaic installation.
Frequently asked questions about battery storage systems
How long does a battery storage system last?
Modern lithium-ion battery storage systems typically have a service life of around 10 to 15 years or several thousand charge cycles. Many systems are backed by long-term warranties.
Is a battery storage system worth it for photovoltaic systems?
A battery storage system is particularly worthwhile if a high level of self-consumption is desired and electricity prices continue to rise. It increases independence from energy suppliers and improves the overall economic efficiency of the PV system.
Can a battery storage system be retrofitted?
Yes, many battery storage systems can be retrofitted without any issues – provided that the existing inverter is compatible or can be upgraded accordingly.
How much does a 10 kWh battery storage system cost?
The cost of a 10 kWh battery storage system typically ranges between approximately €2,000 and €4,000, depending on the manufacturer, battery technology, and system features. Pricing is influenced by factors such as cell quality, system expandability, warranty terms, and compatibility with the inverter. Additional installation and connection costs may also apply.
How long does a 10 kWh battery storage system last for household appliances?
How long a 10 kWh battery storage system can supply power depends on your individual electricity consumption and the appliances being used. With an average household load of around 1,000 to 2,000 watts, a fully charged battery can provide electricity for several hours. Typical household devices such as refrigerators, lighting, routers, and entertainment electronics can usually be powered throughout the evening and night. High-energy consumers like heat pumps or electric vehicles will reduce the available runtime accordingly.