How Long Does a Solar Panels Last?

Source: InterNACHI Life Expectancy Chart
20-30 years
Estimated lifespan
20 years
Minimum
30 years
Maximum

Estimated Replacement Cost

$15,000 – $30,000
system installed | National average, 2025-2026

Extend Its Life

Inspect annually. Clean panels when visibly dirty. Check for shading from growing trees. Monitor output for drops indicating issues.

Category: Electrical

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Lifespan estimates are based on industry data for typical residential installations with normal use and proper maintenance. Actual lifespan varies with installation quality, climate, usage intensity, and maintenance. These figures may differ from other sources.

Source: InterNACHI Standard Estimated Life Expectancy Chart for Homes

Page generated: 2026-03-29