Solar Panel Maintenance in Switzerland — Costs and Process
A solar panel system requires little maintenance, but not none. This page explains what maintenance involves, what it costs and how often the system should be checked.
Quote
maintenance cost
depends on scope and installer
25 to 30 years
module lifespan
Indicative values, updated September 2026. Sources: Pronovo, ElCom, Swissolar.
Why it pays off
Why is maintenance important?
A neglected system can produce less electricity without the owner noticing.
Regular maintenance protects your investment and helps the system run at the optimal level.
Unmaintained system
Lower output
Maintained system
Checked output
Module lifespan
25 to 30 years
Maintenance costs
Request a quote
Services overview
What does solar panel maintenance include?
Visual inspection of modules
Once a year, the modules should be checked for dirt, cracks, discolouration or damage. Bird droppings, leaves and moss can noticeably reduce production.
Module cleaning
In Switzerland, rain is usually sufficient to keep the modules clean. In dusty cantons or with heavy bird activity, manual cleaning may be useful.
Inverter inspection
The inverter is the heart of the system. It should be checked annually for errors, overheating and correct functioning.
Electrical connection checks
Cable connections, connectors and terminals can loosen over time. Regular checks prevent failures and fire risks.
Production monitoring
Modern systems have digital monitoring. Anyone who regularly monitors production data will immediately detect deviations.
Roof inspection
During the annual inspection, the roof around the mounting should also be checked — for watertightness and stability of the substructure.
Cost overview
How much does maintenance cost in Switzerland?
Maintenance prices depend on the system, access and the work included.
| Service | Cost |
|---|---|
| Inspection and cleaning | Request a quote |
| Repairs and inverter replacement | Project-specific |
Maintenance intervals
How often should a solar system be maintained?
For a complete all-in-one solution with battery and heat pump, the same intervals apply — the installer handles the coordination.
| Measure | Frequency |
|---|---|
| Visual inspection | As recommended by the installer |
| Professional inspection | According to the service plan |
| Module cleaning | As needed |
| Inverter check | According to the manufacturer |
| Electrical check | According to applicable rules |
DIY work
Can I do the maintenance myself?
The visual inspection and basic cleaning can be carried out by the homeowner. For everything electrical — connections, inverter, terminals — a certified specialist must be engaged.
Important: Roof work should always be carried out by professionals for safety reasons.
Warranties
What warranties exist on a solar system?
Modules
80% performance after 25 years
Module lifespan
25 to 30 years
Inverter and installation
Depends on manufacturer and installer
A good provider explains all warranties transparently before purchase.
Submit a maintenance request now
Do you have an existing system that needs maintenance? Or are you planning a new system and would like to take out a maintenance contract straight away? We connect you with the right partner.
Get free quoteFirst compare quotes? Or all providers at a glance?
Frequently asked questions
Frequently Asked Questions
Do I need to clean my solar panels regularly?+
In Switzerland, rain is sufficient in most cases. In areas with heavy bird activity or in dusty cantons, manual cleaning once a year is recommended.
How much does a maintenance contract for a solar system cost?+
Maintenance contract prices depend on the installer and the included work. Request a written quote.
How long does an inverter last?+
Inverter lifespan and replacement cost depend on the model. Ask the installer for the applicable warranty and replacement quote.
Do I lose the warranty if I do the maintenance myself?+
The visual inspection and cleaning of the modules can be done without voiding the warranty. However, electrical work must be carried out by a certified specialist.
How do I know if my system is not producing optimally?+
Via the digital monitoring of the inverter, you can track daily production. If production deviates significantly from the previous year without an obvious reason, you should request an inspection.
Who can carry out maintenance on my solar system?+
Certified Swiss installers offer maintenance services. PvPro.ch also connects you with service partners for existing systems on request.