Have you been researching solar lately? Or perhaps you’ve even had a solar setup installed. Well, you’ve probably discovered one thing – solar panel warranty information is … confusing.
Why?:
- Different brands promise different things
- Installers use different terms
- Australian regulations add another complex layer.
Add in the recent national solar battery rebate on top of all of that, and homeowners understandably want to know exactly what protection they’re getting when they invest in a system.
At Wire In Electrical, we install and repair countless systems across Sydney these days – so we hear the same questions every week from people just like you who are trying to make sense of their warranty on solar panels.
That leads us right here – to this guide where we’ll put all of that knowledge together in one place – clear, honest, and written so you can actually understand it!
So here’s our list of the top customer questions about solar warranties of 2025 – and some practical advice and what you can expect from your installer as a bonus!
Top 11 customer questions about solar warranties
1. What warranties do solar panels normally come with?
The big one! Well, in Australia, most panels come with two separate warranties:
Performance warranty (typically 25-30 years): Guarantees the panels will still produce a set percentage of their original output after a long time – often around 80-85 percent at year 25.
Product warranty (typically 12-25 years): Covers the panel itself, meaning:
- Defects
- Premature failure
- Manufacturing faults.
They’re all covered. This is the warranty you actually claim if a panel breaks, cracks, delaminates, or simply stops working.
2. What’s the difference between a product warranty and a performance warranty?
As we’ve implied:
- The product warranty protects the physical hardware.
- The performance warranty protects the output over time.
Most homeowners mistakenly assume the performance warranty means the panels will be replaced – but that’s not right. A performance claim usually results in a panel being tested, not swapped.
3. What is the typical solar panel warranty Australia requires?
There’s actually no mandatory length, notwithstanding pretty strict regulations across the board in Australia. However, most Tier-1 brands competing in solar panel warranty Australia wide markets now offer:
- 15-25 years product warranty
- 25-30 years performance warranty.
Therefore, any panel with less than a 12-year product warranty should be a red flag as we head into 2026.
4. Who do I contact if something goes wrong – the installer or the manufacturer?
Actually, both can help. But:
- The installer is responsible for system design, wiring, mounting, isolators, compliance and workmanship.
- The manufacturer is responsible for the panels themselves.
A good solar panel installer (like us!) will help handle the claim on your behalf so you don’t have to fight with global tech companies!
5. What voids a solar warranty? (This one shocks most people)
Let’s get straight into the common warranty killers:
- Unlicensed or non-accredited people touching your system
- Poor installation or non-compliant mounting
- Water ingress caused by bad roof penetrations
- Damage caused by animals (yes – birds and possums void a lot of warranties!)
- Lack of system inspections
- Incorrect cleaning methods
- Using non-approved replacement parts.
If you’re unsure, always check your brand’s warranty document. You’ll find that some are surprisingly strict.
6. What about inverters – do they have separate warranties?
Yes!
- Most inverters carry a 5-12 year product warranty, depending on brand and model.
- Premium European inverters tend to start at 10 years. Some cheaper Asian brands can be as short as 5 years.
Bear in mind that your inverter will usually need replacement before your panels do – this is completely normal.
7. Do solar batteries have their own warranty rules?
Absolutely – battery warranties are completely separate. With the new Federal solar battery rebate increasing battery adoption, a lot of people are reading battery warranties for the first time.
To summarise it for you, battery warranties typically promise:
- A certain number of cycles (for example, 6000 cycles)
- A minimum retained capacity after 10 years (often 60-80 percent)
- Solar battery installation by an accredited technician
Unlike panels, battery warranties are much tighter. If your battery is used beyond the manufacturer’s daily throughput or installed incorrectly, for instance, you may not be covered at all.
8. Does my location affect my warranty claim?
Yes it does – especially in Sydney where humidity, salt in coastal suburbs and extreme heat can all stress panels. Manufacturers sometimes reduce warranty coverage in these places if the system is installed:
- Within a certain distance of the ocean
- On high-salt rooftops
- In areas with extreme weather exposure.
This is why local installers who understand everything about solar panel warranty Sydney wide specifics – especially in terms of the conditions and installation tweaks – are worth their weight in gold.
9. What paperwork should I receive after installation?
You should receive:
- Warranty documents for panels, inverter and battery (if installed)
- SAA Compliance Certificates
- Electrical compliance paperwork
- System design and layout
- Full installer details
- Maintenance instructions
If you didn’t receive these, something’s wrong – you are perfectly justified in requesting them immediately.
10. Are extended warranties worth it?
Sometimes … but not always.
Panels with 20-25 year product warranties really don’t need an extension – that’s plenty of time. Inverters, on the other hand, often do benefit from extended warranties.
As for batteries, they almost always rely on the 10-year warranty that comes standard.
11. What happens if the manufacturer goes out of business?
This is the big fear – but in 2025, many suppliers in Australia offer backed warranties. What does that mean? It means an Australian distributor or third party accepts responsibility even if the manufacturer disappears.
So: Always buy from brands with a strong Australian presence.
What else do you need to know about solar warranties?:
- Many manufacturers only provide replacement parts. You may still need to pay a tech to diagnose, remove and reinstall the panel or inverter.
- If your installer didn’t consider shading or your installer put panels facing a poor direction, the warranty won’t help – because technically nothing is “faulty.”
- Abrasive tools, pressure washers, or harsh chemicals can void a claim. Soft water and a non-abrasive cloth are always safest.
How Wire In Electrical protects your warranty
We design systems that comply with all manufacturer requirements, plus:
- Correct isolators
- Proper cable sizing
- Safe roof penetrations
- Approved mounting systems
- Accredited installation for panels, batteries and inverters.
Because of this, your warranties remain valid – and your system performs exactly as it should.
And if a warranty claim is needed, we handle the entire process for you. No chasing overseas manufacturers – so no stress. Phew!
Thinking about solar or a new battery?
If you want a system with strong warranties and a professional team that actually stands behind its work, Wire In Electrical is here to help. We install, repair and maintain solar systems all across Sydney. Get expert advice, clear answers, and a system built to last by reaching out to Wire In Electrical today for a quote.
