Is your solar inverter losing efficiency?
Your inverter converts DC power from your panels into usable AC electricity. When it degrades or malfunctions, your entire system's output drops — sometimes by 10–25%. Here's how to spot inverter issues early and what to do about them.
Related issues
Inverter efficiency loss
Degradation or malfunction in the inverter reducing DC-to-AC conversion efficiency. Often indicated by error codes or unexpected shutdowns.
Typical loss: 5–25%Detection: electrical
Self-check tip:
Check your inverter display for error codes or red/amber warning lights. Compare current output to the inverter's rated capacity.
Is your system affected?
Use our free Solar Loss Checker to estimate how much energy your system may be losing.
Check my systemBased on conservative solar performance modelling and published degradation data
NRELIEA-PVPSSunSpecPVsyst+ published research
Updated April 2026 · Structured performance modelling
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