Enphase · inverter
Enphase — natural panel degradation
While degradation primarily affects panels, Enphase inverters also lose efficiency over time. With a typical lifespan of 25 years, efficiency loss becomes measurable after 5–7 years of continuous operation.
Natural panel degradation details
All solar panels lose efficiency over time at roughly 0.5–0.8% per year. Accelerated in extreme heat or poorly manufactured panels.
Self-check tip:
Compare current annual production to your system's first-year output. A decline beyond 1% per year may indicate accelerated degradation.
Brand lifespan
25 years
Warranty
25 years
Check your Enphase system
Use our free Solar Loss Checker to estimate how much energy your Enphase system may be losing.
Check my systemBased on conservative solar performance modelling and published degradation data
Updated April 2026 · Structured performance modelling
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