How shading impacts your solar system performance — Australia
Even small amounts of shading can disproportionately reduce solar output. A shadow covering just one cell in a string can reduce the output of the entire string. New tree growth, nearby construction, or seasonal changes in sun angle can all introduce shading that didn't exist when your system was installed. This guide is tailored for Australian solar owners, where high UV exposure and extreme temperatures make these issues particularly relevant.
Symptoms to watch for
Signs that this issue may be affecting your system
Partial shading
ModerateNew tree growth, nearby construction, or seasonal shading patterns reducing output on part of the array.
What you can check yourself
Actions you can take today without professional help
Partial shading
Check panels at different times of day. New tree growth or structures may cast shadows that didn't exist when the system was installed.
When to get a professional inspection
Signs you need professional help
Expected inspection costs
Drone thermal audit
Most comprehensive option
Handheld thermal scan
Best for smaller systems
Electrical inspection
Inverter and wiring only
Find inspection providers
Is your system affected?
Use our free Solar Loss Checker to get a personalised diagnosis with an action plan.
Based on conservative solar performance modelling and published degradation data
Updated April 2026 · Structured performance modelling
How we calculate →