How Long Do Solar Panels Last?
Key Takeaways
- Understand the core components of solar pricing.
- Always compare multiple quotes to find the best deal.
- Incentives can drastically reduce your net cost.
The Lifespan of a Solar System
Solar panels are remarkably durable. The industry standard lifespan is 25 to 30 years, which aligns with the performance warranties offered by most major manufacturers.
Degradation Over Time
Solar panels don't usually suddenly "die" at year 25. Instead, they slowly degrade. A typical panel degrades at a rate of 0.5% per year or less. This means that after 25 years, a high-quality panel will still operate at roughly 85% of its original efficiency. It will continue producing electricity for decades beyond that, just at a slightly lower output.
Inverter Replacement
While the panels themselves last 25+ years, the solar inverter (which converts the DC power to AC power) works much harder. Central string inverters typically need to be replaced once during the lifespan of the system, usually around year 12 to 15. Microinverters, however, often carry 25-year warranties designed to match the panels.
Reviewed by the Superior Solar editorial team
We enforce a strict editorial policy focused on factual accuracy, transparent methodologies, and unbiased homeowner education.
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