Balcony Solar as a Tenant in Germany: What the Section 554 BGB Claim Has Actually Meant Since 2024

Since the reform the provision is headed "Barrier reduction, e-mobility, burglary protection and plug-in solar devices" — the last item is the new one. The operative sentence reads, in the official statutory text:

"Der Mieter kann verlangen, dass ihm der Vermieter bauliche Veränderungen der Mietsache erlaubt, die dem Gebrauch durch Menschen mit Behinderungen, dem Laden elektrisch betriebener Fahrzeuge, dem Einbruchsschutz oder der Stromerzeugung durch Steckersolargeräte dienen."

In English: the tenant may demand that the landlord permit structural alterations to the rented property which serve use by people with disabilities, the charging of electric vehicles, burglary protection, or electricity generation by plug-in solar devices.

Three details matter more than they look.

First, it is a claim, not an automatic right. "The tenant may demand" means the tenant is entitled to ask and to insist — not that drilling may begin unannounced. Confusing the two leads to installing without permission, which is a weaker position in any dispute than the law actually offers.

Second, the word "privileged" does not appear in the statute. It shows up in nearly every guide, but it belongs to German condominium law, where the statute really does describe a catalogue of favoured measures. Tenancy law is built differently: a claim, with one narrowly drawn exception. The outcome is similar; the route is not.

Third, the reform arrived inside a law with an unwieldy name. It sits in the Act on the admission of virtual condominium owners' meetings, on facilitating the use of plug-in solar devices and on the transferability of limited personal easements for renewable energy installations, dated 10 October 2024 and promulgated in the Federal Law Gazette 2024 Part I No. 306 on 16 October 2024. Article 4 of that act states: "Dieses Gesetz tritt am Tag nach der Verkündung in Kraft" — this act enters into force on the day after promulgation. That produces 17 October 2024, a date the transitional provision in Article 3 of the same act confirms explicitly.

This provenance is not trivia. It explains why incorrect citations circulate: number 306 is frequently misreported as a different gazette number. Anyone citing the source in a dispute should cite the right one.

The claim under Section 554 BGB is a claim to permission. It does not substitute for it. In practice you still ask — from a far stronger position than before October 2024.

The German consumer association Verbraucherzentrale puts it plainly on its page on rules and standards for plug-in solar (as of 6 March 2026): anyone who wants to install a plug-in solar device as a tenant, or as a co-owner in a condominium association, must obtain consent from the landlord or the association. On the effect of the reform it writes that installation may only be refused where it would be "unzumutbar" — unreasonable — for the association or the landlord.

A written request is therefore the sensible route, naming three things: the specific device with its power ratings, the intended mounting method, and an undertaking to remove the system without trace at the end of the tenancy. None of that is a statutory formality. It is simply the version that can be evidenced later.

One point many miss: Section 554(1) sentence 3 BGB allows the tenant to undertake to provide "a special security", with Section 551(3) BGB applying accordingly. An additional security is thus something the statute anticipates — an offer the tenant can make, not a condition the landlord is free to invent.

The exception is in Section 554(1) sentence 2 BGB and is deliberately narrow: the claim does not exist where the structural alteration cannot reasonably be expected of the landlord, even taking the tenant's interests into account.

Structurally this is a rule-and-exception pattern: sentence 1 grants the claim, sentence 2 withdraws it in a defined case. In German civil procedure, a party invoking an exception generally has to plead and substantiate it — which is why advice centres and practitioner commentary conclude that the landlord must explain why the system is unreasonable for them, rather than the tenant having to prove that it is reasonable.

That conclusion is plausible and widely held, but it is an inference from the structure of the provision rather than wording found in the statute itself. No supreme court ruling specifically on the allocation of the burden of proof for plug-in solar devices under Section 554 BGB could be found for this article. Anyone relying on that point should have it checked by a lawyer.

What the case law so far does not accept is a blanket objection. Matters of taste, generalised liability worries, or a formulaic reference to "safety" do not carry a refusal. What can carry one are concrete, evidenced grounds — a demonstrable load problem on the railing, or heritage protection.

Case law on the new version of Section 554 BGB is still young and mostly from local courts. The summary below draws on the case collection published by Haufe (as of 7 January 2026) and a report by the VDIV dated 20 January 2026.

Two readings matter here, and they point in opposite directions.

The Hamburg-Wandsbek decision is the clearest indication so far that the new claim bites in practice — but according to the cited source it is not final, so it is not settled law. The Cologne decision shows the other direction: where a concrete safety risk is established, removal can be ordered. "The landlord must consent" is therefore false as an absolute statement.

The VDIV additionally reports a case against a large housing company in which extensive conditions — wind load calculations, structural certificates, special glazing standards — were assessed as incompatible with the statutory claim; the company then approved the installation without reservation.

The claim concerns the whether, not every detail of the how. Based on the VDIV's compilation of 20 January 2026, the split runs roughly as follows:

The tenant bears the cost of the equipment and its installation. The claim under Section 554 BGB obliges the landlord to permit, not to contribute.

One sentence that often gets lost sits in Section 554(2) BGB: any agreement departing from this to the tenant's disadvantage is void. A tenancy clause banning plug-in solar devices outright therefore has no effect, regardless of how old the contract is.

Anyone living in an owner-occupied flat needs a different legal basis. Owners rely on Section 20(2) sentence 1 of the Condominium Act (WEG), to which the same reform added a new number 5: "der Stromerzeugung durch Steckersolargeräte". There is a claim here too — but against the community, and it is implemented by a resolution of the owners' meeting.

Guides routinely conflate the two routes, although they differ on one decisive point: a tenant approaches a person, while an owner approaches a body with notice periods and an agenda. A tenant renting inside a condominium may need both at once — permission from the landlord who owns the flat and a resolution of the community, where common property is affected or the system is visible from outside. The federal supreme court decision of 18 July 2025 noted above underlines exactly this.

Registration is a public-law duty and has nothing to do with the tenancy question. Both are required; neither substitutes for the other.

According to the Marktstammdatenregister FAQ, the deadline is "1 Monat nach Inbetriebnahme der Anlage" — one month after commissioning. For a balcony system, commissioning is the moment the device is assembled or mounted and the plug is inserted into a socket for the first time. Registration is free of charge: "Die Registrierung ist gebührenfrei." The ADAC (as of 2 July 2026) gives the same deadline, stating it must happen within one month of commissioning.

Two simplifications of recent years are relevant:

• Since 1 April 2024, considerably fewer details are needed. The Bundesnetzagentur press release of 28 March 2024 states that operators now enter only five details about their balcony system alongside their personal data, where previously around 20 were required.

• A separate notification to the grid operator is no longer needed. The ADAC writes that an additional registration with the network operator has not been necessary since May 2024 (as of 2 July 2026).

The power limits within which this simplified route applies are given by the ADAC, per electricity meter, as a maximum of 2000 watts rated module output and a maximum of 800 watts for the inverter. Those two figures are also the frame for the simplified grid connection procedure under the German Renewable Energy Act — going beyond them means leaving the simple route.

1. Pick the specific device, including module output in watts and inverter output in volt-amperes. A request without concrete figures is easy to push back on.
2. Name the mounting method — free-standing, hooked over the railing, or bolted. The less building fabric is touched, the harder a refusal becomes.
3. Ask in writing and cite the claim under Section 554(1) sentence 1 BGB expressly.
4. Offer to remove it on moving out. The undertaking costs nothing and removes the basis for a common objection.
5. Check your private liability insurance and enclose the proof straight away.
6. If refused, demand reasons. A blanket no is challengeable on the case law cited above; a concretely reasoned one may hold.
7. Register within one month of commissioning in the Marktstammdatenregister.
8. In a condominium, clarify separately whether an owners' meeting resolution is also needed.

The reform has measurably improved the tenant's starting position, but it has not created a self-service right. The claim under Section 554 BGB forces the landlord to explain themselves. It replaces neither the permission nor the registration, and it does not help against a concretely evidenced safety concern.

Whether the purchase then pays for itself financially is the subject of our article on the payback of a balcony system with storage; the insurance side is covered in our guide to home contents insurance. This article answers only the question that comes first: whether you are allowed to at all.

All statements and sources as of 7 August 2026. This article reproduces the statutory text and published decisions and is not legal advice. Per the cited source, the AG Hamburg-Wandsbek decision is not final; the competent court decides each individual case.