Solar panels provide an excellent return on investment, thanks to their long service life of 25 to 30 years. Over time, the savings from reduced electricity bills far outweigh the upfront costs, making solar an investment that grows in value as years go by.
However, like any system, solar panels may encounter performance issues. The good news is that most problems are easy to fix, and major issues are often covered by warranties. Below are some common solar panel issues and how to resolve them.
1. Dust and Dirt Accumulation
Dust and dirt can build up on the surface of solar panels, affecting their ability to produce energy.
How to Solve?
In Malaysia, frequent rain naturally helps keep your panels clean. However, if dirt starts to impact performance, simply clean the panels yourself. Mix dish soap with warm water and use a soft sponge or cloth to wipe the glass. If preferred, professional cleaners can also handle the job for you.
2. Unusual Efficiency Loss
Solar panels gradually lose a small amount of efficiency each year, typically less than 0.5%. However, a sudden drop in output signals a problem.
How to Solve?
Keep an eye on your electricity bills for any sudden changes in energy usage. If you notice an unexpected drop in output, reach out to your solar PV provider to diagnose the issue.
3. Malfunctioning or Disconnected Components
A problem with any part of the system—solar panels, wiring, inverters, circuit breakers, or batteries—can reduce energy output.
How to Solve?
While major malfunctions are rare, loose connections or tripped breakers can occur. If you suspect a problem, contact your solar provider for an inspection and professional repair.
4. Monitoring System Errors
Low energy output may not be a panel issue but a problem with your monitoring system.
How to Solve?
Install a dedicated monitoring system for your solar panels. This will ensure accurate measurements, unaffected by other devices. Monitoring systems help track panel performance and simplify troubleshooting when necessary.
5. Shade From Trees
Trees growing around your home can cast shade on your solar panels, reducing their overall energy output.
How to Solve?
Before installing your solar panels, inspect the area for potential shading. If trees grow and begin to block sunlight, trim them back to restore your system’s performance.
General Tips for Solar Efficiency
Solar panels require minimal maintenance, and your provider can assist with warranty claims or component replacements if needed. To further increase savings, adjust your energy usage habits by operating appliances, like dishwashers and washing machines, around midday when the sun is strongest.
By staying aware of these potential issues and taking proactive measures, you can ensure your solar panels continue performing at their best for years to come.
