Solar Panel Warranties Explained: What Homeowners Should Know

Solar panel warranties come in three layers: product, performance and installation. Panels typically last 25 years or more in Australia. Compare all three layers and get the terms in writing.

A solar system is a big purchase. The warranty is what protects it. Yet most buyers compare price and panel size, then skip the fine print.

That's risky. Solar panel warranties vary a lot by brand and by installer. Some cover defects. Some cover output. Others cover only the installation. Knowing the difference can save you thousands.

At Right Choice Solar, we answer warranty questions every week. This guide explains what's covered, how long it lasts, and what to ask before you sign.

A solar warranty is a written promise. It says the equipment will work as described, and it says who will fix it if it doesn't. You may also hear it called a solar panel guarantee. The idea is the same.

So what guarantees are provided with solar panels? Most systems carry three layers of cover:

Product warranty: covers defects in how the panel was made.

Performance warranty: guarantees how much power the panel still produces over time.

Installation warranty: covers faults in the way your system was fitted.

Each layer comes from a different source. The manufacturer backs the first two. Your installer backs the third. Always check who stands behind each promise.

Read Also: Inverter Warranties vs Panel Warranties: Key Differences Explained

In short, most panels come with two warranties. A product warranty typically runs 10 to 25 years. A performance warranty typically runs 25 to 30 years. Exact terms depend on the brand.

Solar panel product warranty

This covers defects in materials and build. Think cracked cells, faulty junction boxes or layers that start to separate. If a panel fails because of how it was made, the manufacturer should repair or replace it.

The solar panel product warranty is the one to compare first. A longer term shows the maker trusts its own build.

Solar panel performance warranty

Panels slowly lose power as they age. That's normal. A performance warranty promises a minimum output after a set time. Many brands promise roughly 80 to 90 percent of original output at year 25 to 30.

If your panels drop below that line, you can make a claim. Check how output is measured and who handles the claim in Australia.

Most solar panels last 25 to 30 years, and many keep working beyond that. They don't stop suddenly. They lose a small amount of output each year.

Australia is tough on rooftops. Strong sun, summer heat and hail all test the glass and frames. Good installation and quality panels help your system handle it.

A warranty is not the same as a lifespan. The warranty is the minimum the maker promises. Your panels may well outlast it.

Brand warranties cover the gear. They don't cover how it was fitted. That's the job of the solar installation warranty, often called a workmanship warranty.

It protects you against installation faults. Think loose wiring, poor mounting or leaks around roof fixings. A solar panel installation warranty in Australia typically runs 5 to 10 years. Ask for it in writing.

This cover matters as much as the brand warranties. A top-quality panel on a badly fitted roof still causes trouble. Strong solar panel installation is the base every other warranty relies on.

Also ask what happens if your installer closes down. Some installers back their work with insurance. Others don't.

Sometimes, but not in the way most people expect. Product and performance warranties cover defects and output loss. They don't cover routine upkeep like cleaning or servicing. That's usually your job.

Some installers sell service plans for inspections and repairs. These are separate from the manufacturer's warranty. Ask exactly what the plan includes.

Most warranties also don't cover:

Storm, hail and lightning damage, which is usually an insurance matter

Faults caused by another tradie's work

Lost output from shading, dirt or poor upkeep

Labour and removal costs, which vary by brand

Keep your invoice and warranty papers safe. You'll need them to make a claim.

Here's a quick view of how the three layers compare. Terms vary by brand, so always read your own documents.

The lesson is simple. Longer isn't always better. A 25-year promise means little if the company won't be around to honour it.

When you review solar quotes, don't stop at the headline years. Run through this checklist:

Does the manufacturer have a real presence in Australia?

Who pays for labour and shipping on a claim?

Can you transfer the warranty if you sell your home?

What happens if your installer closes down?

Are the products and installers Clean Energy Council approved?

Home warranties explained simply: a solar warranty usually stays with the system, so many transfer to a new owner. Some need a form or a fee.

Australian Consumer Law also gives you rights on top of any written warranty. Products must work as promised and be fit for purpose. The ACCC website explains how this works.

A low solar system price can hide a thin cover. Compare the warranty, not just the cost.

We believe you should understand your cover before you buy. Our team walks you through every warranty line by line. No jargon. No fine print surprises.

We install quality panels from trusted brands, and we put our installation terms in writing.

When you're ready to compare, we'll give you a clear solar installation quote with every warranty listed.

What is the warranty on solar panels in Australia?

Most panels carry a product warranty of 10 to 25 years and a performance warranty of 25 to 30 years. Your installer also gives an installation warranty, typically 5 to 10 years. Exact terms depend on the brand, so check your quote.

How long do solar panels last in Australia?

Most panels last 25 to 30 years or more. They lose a small amount of output each year rather than failing suddenly. Quality products and good installation help them handle Australian heat and hail.

Are there warranties on solar that cover maintenance and repairs?

Product and performance warranties cover defects and output loss, not routine upkeep. Some installers sell service plans that include inspections and repairs. Ask what any plan covers, and keep your records.

What is the difference between a product warranty and a performance warranty?

A product warranty covers defects in how the panel was made. A performance warranty guarantees a minimum power output over time. One protects the build. The other protects the energy you expect.

What guarantees are provided with solar panels?

You typically get three: a product warranty, a performance warranty and an installation warranty. Australian Consumer Law also gives you rights, such as products that work as promised.

Does a solar installation warranty transfer if I sell my home?

It depends on the brand and the paperwork. Many warranties pass to the new owner, but some need a form or a fee. Check the terms before you buy.

Who do I contact to make a solar warranty claim?

Start with your installer. They know your system and can lodge the claim. If they've closed down, contact the manufacturer's Australian service team. Keep your invoice and warranty papers handy.

Solar panel warranties protect one of the biggest purchases you'll make for your home. Know the three layers: product, performance and installation. Ask who backs each one, and get the terms in writing.

A cheap quote means little if the cover is thin. Read the terms, ask the hard questions and compare like for like.

Want clear warranty terms before you decide? Contact us today for a free solar quote from Right Choice Solar.