Balcony power plants for rented apartments: Everything you need to know

Everything You Need to Know About Balcony Power Plants for Tenants

Given rising energy prices and growing environmental awareness, more and more tenants are becoming interested in so-called balcony power plants. These small photovoltaic systems offer a simple way to generate your own electricity – even without your own roof. However, tenants in particular face many questions: Is installation allowed? What are the legal requirements? And is the investment even worth it?

In this comprehensive guide, you will find out everything you need to know about balcony power plants in rented apartments – from the legal framework and technical aspects to funding opportunities and economic viability. The article is based on current legal developments and practical experience to provide you with a well-founded decision-making basis.

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Balcony Power Plant: What is it?

A balcony power plant – also known as a mini PV system or plug-in solar device – is a small photovoltaic system specifically designed for use in apartments. Typically, it consists of one to two solar modules, an inverter, and a connection cable.

The special thing is: the electricity generated is fed directly into the household's own grid via a socket. This allows electrical devices in the household to be supplied immediately with self-produced solar power.

The output of such systems in Germany is currently usually up to 800 watts (depending on legal regulations), which makes them ideal for self-consumption. They are relatively inexpensive, easy to install, and do not require extensive infrastructure.

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Am I allowed to install a balcony power plant as a tenant?

In principle, tenants are also allowed to operate a balcony power plant. However, the legal situation is not entirely clear and depends on several factors.

A crucial point is that installation often involves structural changes – for example, by attaching it to the balcony or facade. Such changes often require the landlord's consent.

In recent years, however, case law has developed in favor of tenants. In the course of the energy transition, the use of renewable energies is increasingly seen as socially desirable. Therefore, tenants are more frequently granted the right to install, as long as no significant impairments occur.

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Balcony Power Plant as a Tenant: Is a Permit Necessary?

In most cases, the answer is: Yes, the landlord's permission is required.

This is because:

• the exterior appearance of the building can be changed

• safety aspects must be taken into account

• common property may be affected

It is advisable to submit a written request before installation. This should include information on:

• type and size of the system

• method of attachment

• safety measures

• removal obligation upon moving out

A transparent and well-justified application significantly increases the chances of approval.

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When can the landlord refuse?

The landlord may not arbitrarily refuse the installation of a balcony power plant. Nevertheless, there are legitimate reasons for refusal:

• Risk to building safety (e.g., insecure attachment)

• Historic preservation requirements

• Significant visual impairment

• Violation of building regulations

In many cases, however, an individual assessment is required. Blanket prohibitions are increasingly vulnerable in court.

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Installation by Landlord: What Rights Do Tenants Have?

The reverse situation is also interesting: if landlords themselves install photovoltaic systems, tenants benefit indirectly.

In such cases, tenants may be able to obtain so-called tenant electricity. This is often cheaper than conventional electricity from the grid.

In addition, there are political efforts to grant tenants greater say in energy measures. The topic is developing dynamically – it is worthwhile to keep an eye on current legislative changes.

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Balcony Power Plant: Is There Funding for Tenants?

Yes, there are various funding programs that can also be of interest to tenants. These vary depending on the federal state and municipality.

Typical funding includes:

• Grants of 100 to 500 Euros

• Funding programs from cities (e.g., Berlin, Munich, Hamburg)

• Partial tax advantages

In addition, since 2023, VAT on many photovoltaic systems has been eliminated in Germany, which makes purchasing them significantly cheaper.

It is advisable to specifically look for local funding opportunities before making a purchase.

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What should tenants consider during installation?

Although installing a balcony power plant is relatively simple, there are important points to consider:

• Safety: Stable attachment is crucial

• Standards: Use of certified components

• Grid connection: Registration with the grid operator required

• Market Master Data Register: Obligation to register

Furthermore, it should be checked whether the existing socket is suitable. In some cases, a special feed-in socket (e.g., Wieland socket) is recommended.

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Where can a balcony power plant be installed?

Typical installation locations in rented apartments are:

• Balcony (railing or ground mounting)

• Terrace

• Windowsill

• House wall (with permission)

• Flat roof (e.g., on roof terraces)

It is important to have the sunniest possible orientation – ideally to the south. East or west orientations can also be useful, depending on the electricity consumption profile.

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How to install a balcony power plant in a rented apartment?

The installation is done in a few steps:

1. Mounting the solar modules at the desired location

2. Connecting the inverter

3. Connecting to the power grid via a socket

4. Registering with the grid operator

5. Entry in the Market Master Data Register

Many systems are designed as "plug-and-play" solutions and can be installed without specialist knowledge. Nevertheless, if in doubt, the support of a specialist company is recommended.

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Is a balcony power plant worthwhile for tenants?

Whether a balcony power plant is worthwhile depends on several factors:

• Acquisition costs (approx. 400–1000 €)

• Household electricity consumption

• Solar radiation

• Electricity price

On average, a balcony power plant can generate about 200–400 kWh of electricity per year. With rising electricity prices, the system often pays for itself within 3 to 6 years.

In addition to financial savings, the ecological aspect also plays an important role: you reduce your carbon footprint and contribute to the energy transition.

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Conclusion

A balcony power plant is an attractive way for tenants to actively participate in the energy transition and simultaneously save electricity costs. Despite some legal hurdles, installation is possible in many cases – especially if discussions with the landlord are sought early on.

With manageable investment costs, easy installation, and increasing political support, balcony power plants are a sensible option for modern rental apartments.

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FAQs

Is a balcony power plant allowed in Germany?

Yes, in principle, operation is permitted. However, certain regulations must be observed, especially regarding registration and safety.

Do I have to register my balcony power plant?

Yes, both with the grid operator and in the Market Master Data Register.

How much electricity can I use myself?

Generally, a large part is consumed directly in the household, especially during the day.

What happens if I move?

The system can usually be easily dismantled and taken with you.

Can I operate multiple balcony power plants?

This is generally possible, but performance limits and reporting obligations apply.

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With this knowledge, you are well prepared to make an informed decision for or against a balcony power plant in your rented apartment.