Australia · South Australia (SA)
Solar panel degradation rates: what to expect in South Australia
All solar panels degrade over time — it's unavoidable physics. The question isn't whether your panels are degrading, but whether they're degrading faster than expected. Published research shows median degradation rates of 0.5–0.8% per year, but real-world rates vary significantly by climate, panel quality, and installation conditions.
South Australia has a arid climate with 5.9 peak sun hours per day. High soiling risk makes this issue particularly relevant. Extreme conditions accelerate degradation.
Related issues
Natural panel degradation
commonAll solar panels lose efficiency over time at roughly 0.5–0.8% per year. Accelerated in extreme heat or poorly manufactured panels.
Typical loss: 3–15%
Check your South Australia system
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Check my systemBased on conservative solar performance modelling and published degradation data
Updated April 2026 · Structured performance modelling
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