Solar Warranties Explained: What’s Covered and Why It Matters
When investing in solar energy, it’s not just about choosing the right panels or inverter — it's also about understanding the warranty that comes with them. A solar system is a long-term investment, and a solid warranty ensures your system performs as promised and protects your peace of mind.
In this guide, we break down the different types of solar warranties, what they cover, and why they matter when selecting a trusted provider.
1. Panel Product Warranty
The panel product warranty covers the physical integrity of the solar panels themselves. This includes issues such as manufacturing defects, material failures, or premature wear.
Most quality solar panels come with a 10 to 15-year product warranty, though premium brands may offer up to 25 years. A longer warranty period usually indicates a more durable and well-tested product.
Tip: Always check if the warranty includes full replacement or just repair — and whether labour costs are covered.
2. Performance Warranty
Solar panels degrade over time, but not all degrade equally. A performance warranty guarantees that your panels will still produce a certain percentage of their original output after a set number of years.
A typical performance warranty promises around 80–90% output after 25 years. This ensures that your solar panels won’t lose efficiency too quickly — giving you better returns over their lifetime.
Why it matters: A strong performance warranty protects your long-term savings and signals that the manufacturer is confident in their technology.
3. Inverter Warranty
The inverter is the hardest-working component of your solar system, converting energy from DC to AC power. Because it works continuously, it's more prone to wear.
Standard inverter warranties usually range from 5 to 10 years, with options to extend. Look for models that offer extended warranty programmes and easy service access.
Smart inverters like iStore’s come with built-in diagnostics and safety features, often backed by longer and more comprehensive coverage — which means less worry for homeowners.
4. Installation Warranty
Some providers offer an additional installation warranty, covering workmanship and installation-related faults, such as faulty wiring or mounting. These can vary from 1 to 10 years, depending on the installer.
Choosing a Clean Energy Council (CEC) accredited installer ensures the work is up to national standards — and that warranty claims will be easier to process if needed.
How to Choose a Reliable Provider
Look beyond the price. A lower-cost system with a weak warranty could cost you more in the long run.
Check reviews and service history. Warranties are only as good as the provider backing them.
Ask about support. Will the provider assist with claims? Do they have local service agents?
A good solar warranty isn’t just a piece of paper — it’s a promise that your system will perform efficiently and be supported throughout its lifespan. By understanding what’s covered and choosing a reliable provider, you’re not just buying solar — you’re investing in long-term peace of mind.
Get in touch today to start our journey together.
Stay committed!
Damien Frearson
