One of the best things about solar is how little it asks of you. Panels have no moving parts and need very little maintenance. Here is what to expect over their 25+ year life.
How Long Do Solar Panels Last?
Most panels are warrantied for 25 years and keep producing well beyond that. Output declines slowly (often around half a percent per year), so a 25-year-old panel still produces the large majority of its original power.
Maintenance: Almost None
- Cleaning — rain handles most of it. An occasional rinse in very dusty or pollen-heavy areas is plenty.
- Inspections — an occasional check of the system and monitoring app to confirm normal production.
- Inverter — the one part that may need replacing once over the system’s life (string inverters last ~10-15 years; microinverters often match the panel warranty).
Monitoring Your System
Modern systems come with an app that shows real-time and historical production, so you will know quickly if anything is underperforming. Most issues are covered under warranty.
What About Roof and Weather?
Quality panels are built to withstand hail, wind, and snow. If your roof needs replacing within a few years, it is usually best to do that before installing solar.
FAQ
Do solar panels need a lot of maintenance?
No. They have no moving parts. Rain usually handles cleaning, and the main long-term item is a possible inverter replacement.
What happens after 25 years?
Panels keep producing, just at a slightly reduced output. Many systems run productively for 30+ years.
Related
General 2026 guidance.