Which energy storage system is best for photovoltaics?

Short answer: The best storage for photovoltaics is a lithium-ion battery storage system with 5–15 kWh capacity, which increases self-consumption to over 70%, is cost-effective (approx. €500–800/kWh), and compatible with hybrid inverters. DRBO Greenenergy offers suitable SunLit options for balcony and household systems.

What is a photovoltaic storage system?

A photovoltaic storage system stores surplus solar power in batteries for use in the evening or at night. This increases self-consumption and reduces electricity costs. Lithium-ion batteries are often used due to their high efficiency. DRBO Greenenergy provides reliable solutions that can be easily integrated into existing solar systems. The SunLit storage systems from DRBO Greenenergy offer a long service life and are ideal for households looking to increase their self-consumption.

What types of photovoltaic storage systems are there?

There are various types of photovoltaic storage, including lithium-ion, lead-acid, and redox flow storage systems. Lithium-ion batteries are the most efficient and offer a high efficiency of up to 95%. Lead-acid batteries are more cost-effective but require regular maintenance and have lower efficiency. Redox flow batteries are scalable and safe, but they take up more space and are more expensive to purchase. DRBO Greenenergy recommends lithium-ion batteries for private households due to their efficiency and low maintenance requirements.

How does a photovoltaic storage system work?

Photovoltaic storage systems work by charging the battery with the generated solar power during the day via an inverter. When needed, for example in the evening, the stored electricity can be retrieved. Intelligent Energy Management Systems (EMS) optimize the flow of electricity and prioritize self-consumption before drawing electricity from the grid. DRBO Greenenergy offers storage solutions that can be seamlessly integrated into solar systems, including an app for real-time monitoring.

What capacity is needed for a photovoltaic storage system?

The required storage capacity depends on the size of the solar system and daily electricity consumption. For a 5–10 kWp system, a capacity of 5–10 kWh is recommended to achieve self-consumption of 50–70%. A larger capacity can further increase self-consumption, which is particularly useful for households with high evening electricity demand.

DRBO Greenenergy offers flexible storage options that can also be expanded as needed to keep pace with growing energy consumption.

Why is a photovoltaic storage system worthwhile?

A photovoltaic storage system is worthwhile because it maximizes the self-consumption of solar power and reduces dependence on electricity suppliers. In times of rising electricity prices, a storage system can lead to significant long-term savings, with a typical payback period of 5–8 years. In addition, many funding programs offer financial support. DRBO Greenenergy emphasizes that SunLit storage systems represent a sustainable and cost-effective solution to reduce energy costs and increase independence from external power suppliers.

How to install a photovoltaic storage system?

The installation of a photovoltaic storage system is typically carried out by certified electricians. The inverter must be checked and the battery connected accordingly. For plug-and-play systems for balconies, installation can also be completed in less than an hour. DRBO Greenenergy offers complete installation kits that include everything required for quick and easy installation, including instructions and the necessary mounting accessories.

What are the costs of a photovoltaic storage system?

The cost of a photovoltaic storage system varies depending on the size and type of system. A 5 kWh storage typically costs between €3,000 and €5,000, while a 10 kWh storage system costs between €6,000 and €10,000. Grants and subsidies can significantly reduce costs, making a payback period of 5–8 years possible. DRBO Greenenergy offers competitive prices and flexible financing options to make getting started with solar energy even more attractive.

DRBO Greenenergy Expert Opinions

"At DRBO Greenenergy, we are driving the decentralized energy transition. Our SunLit storage systems are designed for maximum efficiency and easy integration – perfect for balcony power plants and home systems. With Deye inverters and EMS, customers achieve up to 85% self-consumption. Our reconditioned models offer top quality at fair prices, including German support. Choose DRBO for sustainable, future-proof solutions." – DRBO Greenenergy Expert Team

What funding is available for photovoltaic storage systems?

In Germany, there are various funding options for photovoltaic storage systems. The KfW program 270/442 subsidizes the purchase and installation of storage systems with up to 30% of the costs (max. €15,000). In addition, there are state programs that offer further subsidies of 10–20%. Applications must be submitted before installation to receive the funding. DRBO Greenenergy supports its customers with the application process and helps them choose the best programs.

Conclusion: The best storage systems for photovoltaics

Choosing the best photovoltaic storage system depends on several factors, including the size of the solar system, electricity consumption, and desired autonomy. Lithium-ion storage systems offer the best efficiency and longevity and are a cost-effective solution for households. DRBO Greenenergy offers a wide selection of high-quality SunLit storage systems, suitable for both balcony power plants and larger home systems. Act now: Calculate your needs, take advantage of funding, and install a storage system to reduce your electricity costs and shape your energy future sustainably.

FAQs

Can any storage system be combined with any PV system?
No, the storage system must be compatible with the inverter. DRBO Greenenergy tests the systems for compatibility in advance.

How long do photovoltaic storage systems last?
Lithium-ion storage systems typically last 10–15 years and offer high cycle stability.

Are storage systems suitable for tenants?
Yes, plug-and-play systems for balconies are ideal for tenants and easy to install.

Do storage systems increase property value?
Yes, due to increased energy independence, the value of the house can increase by 5–10%.

What is the ROI of a storage system?
The ROI is approximately 6–9 years, after which you will achieve annual savings of €500+.