High-Performance Inverters for PV Systems & Balcony Solar Systems

Inverters for photovoltaic systems – efficient, reliable, and future-proof

Inverters are a central component of every photovoltaic system, as they convert the direct current generated by solar panels into usable alternating current. Only with a suitable PV inverter (or hybrid inverter) can the generated solar power be used within the household or fed into the public power grid. Modern inverters ensure high efficiency, stable energy yields, and reliable control of your solar system.

In our online shop, you can buy inverters that are optimally matched to different system sizes and requirements. In combination with suitable solar panels and optional battery storage systems, this creates a powerful and future-proof photovoltaic system for your home.

Which inverter should you buy? – The most important selection criteria

Choosing the right inverter depends on the output of your photovoltaic system, the number of connected solar panels, and the desired range of functions. Whether a battery storage system should be integrated from the start or added later also plays an important role.

When buying an inverter, pay particular attention to:

• the inverter power output in kW or kVA
• the number of MPP trackers
• compatibility with battery storage systems
• quality, warranty, and manufacturer

An optimally sized inverter ensures that the solar power generated by the panels is used efficiently and that the photovoltaic system operates reliably.

Types of inverters at a glance

String inverters

String inverters are among the most commonly used inverter types in residential applications. They are particularly suitable for photovoltaic systems with uniformly oriented roof surfaces and offer excellent value for money. String inverters impress with high efficiency and easy installation.

Hybrid inverters

Hybrid inverters combine the functions of a classic inverter with the option to connect a battery storage system directly. They are ideal for households aiming to maximize self-consumption and store surplus solar power. In many cases, a battery can also be retrofitted at a later stage without any issues.

Micro inverters

Micro inverters are installed directly on individual solar panels and are particularly suitable for systems with partial shading or differently oriented module surfaces. Each panel operates independently, helping to minimize energy losses.

Power output and sizing of PV inverters

The power output of an inverter is specified in kilowatts (kW) or kilovolt-amperes (kVA) and should be matched to the total output of the connected solar panels. Careful sizing is crucial for the efficient operation of the photovoltaic system.

Depending on the system design, the inverter can be slightly undersized or oversized to optimally reflect different production profiles. Especially when planning system expansions or integrating a battery storage system, thoughtful inverter sizing is highly recommended.

What to consider when sizing your inverter

• the ratio between inverter power and module power
• roof orientation and potential shading
• the number and configuration of MPP trackers
• planned expansions of the photovoltaic system
• future use of a battery storage system

Balanced inverter sizing ensures efficient operation of the photovoltaic system and stable energy yields over many years.

Inverters and battery storage – perfectly combined

The combination of an inverter and a battery storage system makes it possible to use self-generated solar power even when the sun is not shining. Hybrid inverters are specifically designed to efficiently manage the energy flow between solar panels, household consumption, and storage.

Anyone looking to future-proof their photovoltaic system should ensure battery compatibility when selecting an inverter.

High-quality inverters from well-known manufacturers

Quality plays a decisive role when purchasing an inverter. High-quality PV inverters offer long service life, stable energy yields, and modern monitoring features. Many manufacturers provide apps or online portals that allow system performance to be monitored at any time.

Our range includes inverters from premium and value-for-money manufacturers known for reliability, innovative technology, and long warranty periods.

Buy inverters online – your advantages

When you buy inverters online, you benefit from a wide selection and transparent comparison options. Our photovoltaic online shop offers you:

• a wide range of inverters for photovoltaic systems of all sizes
• string, hybrid, and micro inverters from leading manufacturers
• attractive prices and detailed product information
• inverters for new installations, retrofitting, and modernization

This makes it easy to find the right inverter for your individual photovoltaic system.

Frequently asked questions about inverters

What size should my inverter be?

The power rating of the inverter in kW should generally be matched to the total output of the solar panels. In practice, however, the inverter is often slightly undersized, as solar panels rarely reach their rated output simultaneously and under optimal conditions.

A common design approach is to size the inverter at around 80 to 95% of the installed module capacity. This so-called undersizing usually does not lead to significant energy losses but can improve inverter efficiency and reduce system costs. When planning the system, factors such as roof orientation, shading, and potential future expansions of the photovoltaic system should be taken into account.

How much does an inverter cost?

Depending on the power output and type of inverter, the costs range from approximately €500 (small systems) to €3,000 or more (larger PV systems).

How long does an inverter last?

An inverter usually has a service life of 10 to 20 years. High-quality devices can operate reliably for much longer if properly designed. However, during the lifespan of solar panels (25+ years), the inverter often needs to be replaced once.

What is the difference between string and hybrid inverters?

String inverters convert solar power directly, while hybrid inverters are additionally designed for operation with a battery storage system.

Can an inverter be replaced later?

Yes, an inverter can be replaced or upgraded if necessary, for example to retrofit a battery storage system or expand the photovoltaic installation.