Panel type
Thin-Film Panels
Thin-film panels are lightweight and flexible but less efficient. They degrade faster than crystalline panels, especially in hot climates, with typical rates of 0.8–1.0% per year.
Expected lifespan
20 years
Equipment type
panel
Common issues
Natural panel degradation
All 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%
Panel soiling
Dust, pollen, bird droppings, or debris accumulation reducing light absorption. More severe in arid or agricultural areas.
Typical loss: 2–15%
Check your system
Use our free Solar Loss Checker to estimate how much energy your thin-film panels system may be losing.
Check my systemBased on conservative solar performance modelling and published degradation data
Updated April 2026 · Structured performance modelling
How we calculate →