What’s the Lifespan of Solar Panels, and How Do I Maintain Them?
If you’re considering solar panels for your home in South Melbourne, you’re probably wondering: How long will they last, and what kind of maintenance do they need?
It’s a great question—solar panels are a long-term investment, and ensuring they perform efficiently for decades is crucial. In this guide, we’ll break down:
The lifespan of solar panels in Melbourne’s climate
How to keep them running at peak performance
Why choosing the right solar installer matters
How Long Do Solar Panels Last?
Most high-quality solar panels come with a 25–30 year “performance” warranty, but that doesn’t mean they stop working after that period. Many panels continue generating electricity well beyond 30 years, though at a slightly reduced efficiency.
Expected Solar Panel Efficiency Over Time
Years 1–10: Panels typically operate at 90–97% efficiency
Years 10–25: A slight decline in efficiency, averaging 85–90%
Years 25–30: Most panels still produce at 80–85% efficiency
Beyond 30 years: Panels can still function effectively but at reduced capacity (70–80% efficiency)
The key to maximising the lifespan of your system is choosing high-quality equipment that can outlast the vast weather that Melbourne tends to have. Working with an experienced solar installer can ensure proper setup , helping to extend the life and output of the panels.
Do Solar Panels Require Maintenance?
One of the biggest benefits of solar panels is that they’re low-maintenance. Since they have no moving parts, they require minimal upkeep. However, regular care ensures they keep operating at peak performance.
1. Keep Your Panels Clean
Since Melbourne is coastal, dust, dirt, and sea salt can accumulate on your panels, reducing efficiency. Regular cleaning can help prevent energy losses.
How often? Clean your panels - 1–2 times a year is usually efficient to ensure you maintain maximum power output.
How to clean? Use a garden hose with a gentle spray or a soft brush with soapy water—avoid harsh chemicals
For hard-to-reach roofs: Hire a professional solar panel cleaning service
2. Monitor Your System’s Performance
Most modern solar systems come with an app or monitoring platform that tracks energy production in real-time. If you notice a sudden drop in output, it could indicate an issue such as shading, dirt buildup, or a faulty component.
What to do? You can contact Kenect Energy or your local solar company to assess and fix the issue. They’ll usually charge a minimal call out fee.
3. Inspect for Damage After Extreme Weather
Melbourne’s climate can be unpredictable, with hailstorms, strong winds, and extreme heat. After a major weather event, do a quick visual inspection for cracks, scratches, or loose wiring.
What to do? If you spot damage, don’t attempt DIY repairs. People don’t realise but there is a lot of power running through those panels and are highly dangerous - contact a professional solar technician.
4. Trim Nearby Trees & Avoid Shading
Over time, trees around your home may grow and shade your solar panels, reducing efficiency.
What to do? Regularly trim trees and ensure they don’t obstruct sunlight hitting your panels.
Why Choosing the Right Solar Installer Matters
The lifespan and efficiency of your solar panels depend heavily on installation quality. Poorly installed systems can suffer from roof leaks, electrical issues, and suboptimal performance.
At Kenect Energy, we specialize in professional solar installations in Melbourne, ensuring your system is built to last for decades.
We only use premium-quality panels and inverters
Our installers are CEC-accredited professionals
We provide ongoing support & maintenance to keep your system performing optimally
What About Solar Inverters & Batteries?
While solar panels can last 30+ years, other components like inverters and batteries have shorter lifespans:
Solar Inverters: Typically last 10–15 years before needing replacement
Solar Batteries: Most last 10–15 years, depending on usage and quality
If your system isn’t performing as expected, a faulty inverter or aging battery may be the culprit. We offer comprehensive servicing and upgrades to keep your system running efficiently.
Invest in a Solar System That Lasts
Solar panels are a smart, long-term investment that can save you thousands on energy bills while reducing your carbon footprint. With the right installation and maintenance, your system will deliver clean, reliable energy for decades.
At Kenect Energy, we make solar simple, stress-free, and tailored to your needs. Whether you’re looking for a solar installer in Melbourne or Warrnambool, we’ve got you covered.
Want to find out how much you could save? Contact us today for a free, no-obligation consultation, and let’s design a solar system that works for your home and lifestyle.
