Mein Speicher macht Probleme. Ist das ein Mangel?

Erreicht der Speicher die zugesagte Kapazität nicht, fällt wiederholt aus oder muss ausgetauscht werden, spricht vieles für einen Mangel. Maßgeblich ist, was vertraglich zugesagt wurde.

Welche Unterlagen brauche ich?

Kaufvertrag, Angebot, technische Datenblätter, Rechnungen und Zahlungsnachweise sowie Ihre Mängelanzeigen und den Schriftverkehr mit dem Anbieter.

Es wurden andere Module verbaut als vereinbart. Was gilt dann?

Weicht die Ausführung von der Vereinbarung ab, liegt regelmäßig ein Mangel vor. Ob Nachbesserung, Minderung oder Rückabwicklung in Betracht kommt, hängt vom Ausmaß der Abweichung ab.

Der Anbieter reagiert nicht auf meine Mängelanzeige. Was kann ich tun?

Reagiert der Anbieter nicht oder weist er die Mängel zurück, können weitere Rechte entstehen, etwa Minderung, Selbstvornahme oder Schadensersatz. Eine rechtliche Prüfung schafft hier Klarheit.

Welche Fristen muss ich beachten?

Gewährleistungsansprüche unterliegen der Verjährung. Wann die Frist beginnt und wie lange sie läuft, hängt von der Vertragsart ab. Eine frühzeitige Prüfung ist deshalb sinnvoll.

Haftet der Hersteller für Mängel der Anlage?

Das ist im Einzelfall zu prüfen. Neben Gewährleistungsansprüchen gegen den Verkäufer können eigenständige Herstellergarantien oder Ansprüche gegen andere Unternehmen der Lieferkette bestehen.

Solaranlage mangelhaft – Ansprüche prüfen lassen

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Why an exam is worthwhile

It's not just a matter of whether a photovoltaic system works at all. What you were sold and what was actually installed can also be crucial. Depending on the individual case, repairs, price reductions, compensation for damages, or a complete reversal of the contract may be considered.

A deficiency is more than a defect

Deviating components or faulty planning can also constitute a defect.

Warranty and guarantee are not the same thing

The statutory warranty is directed against the seller; a guarantee may additionally exist against the manufacturer.

Pay attention to deadlines

Warranty claims expire. The sooner the claim is reviewed, the stronger your position.

Specialization in Consumer Law

Over 40,000 mandates, more than 25,000 lawsuits. We enforce consumer economic rights.

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Your system is defective — your claims

Typical problems and their potential consequences:

Whether a repair or replacement can be demanded

Whether the purchase price can be reduced

Whether compensation for lost profits exists

Whether manufacturer warranties apply in addition to the statutory warranty

Whether differing components constitute a defect

Whether a reversal of the contract is an option

Benefit from our experience with over 40,000 cases. We will review your case personally.

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Are you affected?

Do you recognize yourself in this description? We will check what claims you are entitled to.

Battery storage does not provide

The storage system does not reach its promised capacity or fails repeatedly.

Inverter defective

The inverter fails or shuts down; the system comes to a standstill.

Modules defective or underperforming

Individual modules fail or fall below the performance guarantee.

Components other than agreed

Instead of the advertised branded products, other components were used.

Faulty assembly

Installation errors lead to loss of yield, damage to the roof, or leaks.

The provider is not making improvements.

Defects are reported, but the provider does not respond or rejects the claims.

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Your lawyers for purchase and works contract law

We review purchase and work contracts, payment flows, manufacturer specifications, and the consulting situation.

Correctly classifying technical defects

We will examine whether a defect exists and what rights arise from it.

Digital mandate acceptance

Operating nationwide. Mandate acceptance and correspondence are entirely digital. Online file access available 24/7.

Legal enforcement

Consistent enforcement against seller, installer or manufacturer.

Your rights in 3 steps

Our structured process when your solar system is defective.

Case review

Analysis of the purchase agreement, data sheets, defect notices and correspondence with the supplier.

Legal strategy

Individual legal strategy — rectification, reduction, compensation or rescission.

enforcement

Consistent enforcement against seller, installer or manufacturer.

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Frequently Asked Questions

Answers to the most important questions regarding defects in your solar system.

My memory is giving me trouble. Is this a defect?

If the storage system fails to reach its promised capacity, repeatedly fails, or needs to be replaced, this strongly suggests a defect. The decisive factor is what was contractually agreed upon.

What documents do I need?

Purchase agreement, offer, technical data sheets, invoices and proof of payment, as well as your notices of defects and correspondence with the supplier.

Different modules were installed than agreed upon. What rules apply then?

If the execution deviates from the agreement, this regularly constitutes a defect. Whether rectification, price reduction, or rescission of the contract is possible depends on the extent of the deviation.

The supplier is not responding to my complaint. What can I do?

If the supplier fails to respond or rejects the claims of defects, further rights may arise, such as price reduction, self-remedy, or compensation for damages. A legal review will provide clarity in this matter.

What deadlines do I need to observe?

Warranty claims are subject to a statute of limitations. When the limitation period begins and how long it lasts depends on the type of contract. Therefore, it is advisable to review your contract early.

Is the manufacturer liable for defects in the system?

This needs to be examined on a case-by-case basis. In addition to warranty claims against the seller, independent manufacturer's warranties or claims against other companies in the supply chain may exist.

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Is your solar system faulty? You don't have to accept every defect.

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