Jul 13, 2026

Solar Warranty Claims Australia 2026: What's Covered and How to Actually Get Paid

Solar warranty claims are the hidden cost in every solar installation business. They don’t come up often — but when they do, they’re time-consuming, frustrating, and frequently underpaid. Most Australian solar installers have had the experience of a manufacturer dragging their feet on a warranty claim for an inverter or panel replacement, leaving the customer unhappy and the installer out of pocket for the return visit.

Understanding how warranty obligations work in Australia — what’s actually covered, how to lodge a claim that sticks, and what your rights are when a manufacturer refuses — protects both your business and your customers.

The Three Types of Solar Warranties in Australia

Every solar installation in Australia involves at least three distinct types of warranty, each with different coverage, terms, and claims processes.

1. Solar Panel Warranty

Product/materials warranty: Covers manufacturing defects, delamination, cell cracking not caused by physical damage, and premature degradation. Standard terms from reputable manufacturers: 10–15 years for materials defects.

Performance warranty (power output guarantee): Guarantees that the panel will produce at least a specified percentage of its rated output over time. Standard terms: panels rated at no more than 3% degradation in year 1 and 0.5–0.7% per year thereafter, with a minimum 80% output guarantee at year 25–30.

What this looks like in practice: a 400W panel should still produce at least 320W after 25 years. If it falls below this in normal conditions, the manufacturer is obligated to repair or replace.

2. Inverter Warranty

Inverter warranties are typically shorter than panel warranties and have more exclusions. Standard terms from major manufacturers in 2026:

Brand	Standard Warranty	Extended Warranty Available
Fronius	5 years	Up to 10 years (at purchase)
Sungrow	5 years	Up to 10 years
SolarEdge	12 years	Up to 25 years
Enphase microinverters	25 years	—
SMA	5 years	Up to 10 years
GoodWe	5 years	Up to 10 years

Inverter warranties typically cover: internal component failure, software/firmware defects causing performance loss, and communication module failures.

Inverter warranties typically exclude: surge damage (lightning, grid transients), installation errors, physical damage, moisture ingress where the unit is installed in non-approved conditions, and operation outside specified voltage/frequency ranges.

3. Workmanship/Installation Warranty

This is the installer’s own warranty — covering the quality of the installation itself. AS/NZS 5033 and the CEC Code of Conduct require that CEC-accredited installers provide a workmanship warranty as a condition of accreditation.

Minimum requirement: The CEC Code of Conduct requires a minimum 1-year workmanship warranty on installation labour and materials used. Most reputable Australian installers offer 5 years.

What it covers: Mounting system failures, cable connection failures, DC isolator failures directly attributable to installation method, and penetration sealing failures causing water ingress.

What it doesn’t cover: Panel or inverter performance (that’s the manufacturer’s job), storm or hail damage, damage caused by the customer or third parties, or deterioration due to normal weather exposure.

The Australian Consumer Law Layer

Regardless of what manufacturer warranty terms say, the Australian Consumer Law (ACL) — administered by the ACCC — provides consumer guarantees that cannot be contracted out of.

Major failure guarantee: If a solar system (panel, inverter, or installation as a whole) has a major failure — it doesn’t work, or has a defect that would have stopped the customer buying it — the consumer has the right to a full refund or replacement, regardless of the manufacturer’s warranty period.

Durable goods standard: Under the ACL, solar panels and inverters are expected to last a reasonable time given their price, nature, and the claims made about them. A $400 panel that fails after 2 years has not met the “reasonable durability” standard, regardless of a 5-year warranty clause.

Who’s liable under ACL: Both the manufacturer (or importer) and the retailer (installer) can be held liable under the ACL for consumer guarantee failures. As the installer, you are the retailer — you may have ACL obligations to the customer even if the manufacturer is responsible for the defect.

This means you may need to deal with a customer complaint under ACL even when the issue is the manufacturer’s fault. You then have rights to recover from the manufacturer.

How to Lodge a Solar Panel Warranty Claim

Panel warranty claims are the most complex because you need to prove that the failure is a manufacturing defect, not physical damage or installation error.

Step 1: Document the failure thoroughly.

Photograph the panel in situ showing the defect (delamination, cracking, yellowing, cell discolouration)
Record the panel serial number, manufacturer, model, and original installation date
Record the monitoring system output data showing the performance drop
Note whether the failure is isolated to one panel or affecting multiple

Step 2: Rule out external causes. Manufacturers will reject claims where external damage could explain the failure. Document:

No hail damage or visible impact marks
No installer-caused damage (cracking from overtightened clamps, for example)
Mounting position consistent with the approved installation method

Step 3: Submit to the manufacturer (or Australian importer). Most panel brands in Australia are represented by an Australian distributor or importer, not the manufacturer directly. Claims go to the Australian importer. Key details to include:

Proof of purchase (distributor invoice)
Installation date
Site address
Photos of the defect
Performance monitoring data showing degradation rate or failure
Your CEC accreditation number

Step 4: Expect a site inspection request. For claims above a certain value, the manufacturer or their representative will request a site inspection to verify the defect. This is standard. Cooperate and provide access promptly — claims that drag on because of access delays are typically not compensated for the time lost.

Step 5: Know what you’re entitled to. A successful panel warranty claim should cover: replacement panel (like-for-like or equivalent) and reasonable installation costs for the replacement. Some manufacturers attempt to limit the claim to the panel value only (at current market price, not original purchase price). Push back on this under the ACL consumer guarantee framework.

How to Lodge an Inverter Warranty Claim

Inverter claims are usually faster than panel claims because most major manufacturers have Australian service centres or authorised service providers.

Step 1: Run remote diagnostics first. Most modern inverters have monitoring portals (Fronius Solar.web, Sungrow iSolarCloud, SolarEdge monitoring, Enphase Enlighten). Before claiming a hardware fault, confirm:

The error code and what it means (not all error codes indicate hardware failure — many are configuration or grid-related)
Whether the issue is intermittent or consistent
Whether a firmware update resolves it (check manufacturer’s support documentation)

Step 2: Contact the manufacturer’s Australian support. Most manufacturers have an Australian support number or warranty portal. Have ready:

Inverter serial number
Installation date
Error codes or fault description
Monitoring portal access (if you can share a screenshot or portal link)
Proof of installation by a CEC-accredited installer

Step 3: Follow the manufacturer’s prescribed fault-finding process. Manufacturers will often ask you to perform specific diagnostic steps before authorising a warranty replacement (e.g. check DC isolator, check AC contactor, reset and re-commission). Do these — a claim rejected for skipping the diagnostic process costs you a revisit.

Step 4: If the inverter requires physical return. Some manufacturers require the faulty inverter to be sent to their service centre. Organise a temporary solution for the customer if the site will be without solar for an extended period — and document all communication to support a claim for additional costs.

What to Do When a Manufacturer Refuses or Stalls

Manufacturers sometimes decline claims, offer reduced compensation, or simply slow-walk the process indefinitely. Your options:

Write a formal demand letter citing ACL. A letter on your business letterhead (or from the customer to the importer) citing the ACL consumer guarantee provisions and stating a specific deadline for resolution often accelerates the process. Template language:

“Under the Australian Consumer Law (Schedule 2 of the Competition and Consumer Act 2010), the goods supplied do not meet the consumer guarantee of acceptable quality. I am requesting [replacement/repair/refund] within 14 business days. If this matter is not resolved by [date], I will refer it to [Fair Trading/ACCC/VCAT].”

Lodge a complaint with Fair Trading or Consumer Affairs. NSW Fair Trading, Consumer Affairs Victoria, Consumer Protection WA, and equivalents in each state handle disputes between consumers and suppliers. These bodies can facilitate resolution and in some cases compel action.

For amounts up to $25,000: Small Claims Tribunals. VCAT (VIC), NCAT (NSW), QCAT (QLD), and equivalents in other states have online small claims processes designed for exactly these disputes. Filing a claim costs $50–$100 and manufacturers typically settle before the hearing date.

ACCC for systemic issues. If you’re seeing the same defect across multiple systems from the same manufacturer — panel brand-wide delamination, a specific inverter batch with consistent failures — report it to the ACCC. This protects other consumers and may prompt a product recall or manufacturer-funded remediation program.

Managing Warranty Expectations With Customers

The most effective warranty conversations happen at the point of sale, not after something fails.

Provide a written warranty summary at handover. A simple one-page document listing: panel warranty (product + performance, terms, who to contact), inverter warranty (term, what’s covered, contact), and your workmanship warranty (term, what’s covered, who to call). Sign it and give the customer a copy.

Set realistic expectations about claims timeframes. “If there’s ever an issue with your system, contact us first. We’ll coordinate everything with the manufacturer on your behalf. Manufacturers can take 2–4 weeks to assess a claim — we’ll keep you informed throughout.”

Document the installation thoroughly. Photos, commissioning data, monitoring access — all of this serves double duty as warranty support documentation if something goes wrong in year 3 or year 8.

FAQ

How long do solar panels last in Australia?

Quality solar panels installed in Australia are routinely expected to produce power for 25–30 years. Most manufacturers offer a 25-year performance warranty guaranteeing at least 80% of original rated output. Real-world data from early Australian installations (2000s-era) shows panel degradation of 0.4–0.6% per year, meaning panels installed in the mid-2010s are still performing close to spec today.

What happens to my solar warranty if I sell my house?

Panel performance warranties and inverter warranties are typically transferable to new owners — the warranty is against the product, not the buyer. Your workmanship warranty may or may not be transferable depending on your terms of trade. Check with your insurer and update your terms of trade to clarify this.

Can I claim warranty on panels that were damaged by hail?

Storm and hail damage is typically excluded from product/materials warranties. It may be covered under your home and contents insurance policy — your insurer will send a loss assessor to determine whether the damage was storm-related. Some premium panel brands offer hail resistance ratings (IEC 61730 hail impact test); this is worth highlighting to customers in hail-prone areas (Brisbane, western Sydney, Melbourne northern suburbs).

What if my solar installer has gone out of business and I have a warranty issue?

The panel and inverter warranties are with the manufacturer, not the installer — these are unaffected by the installer’s insolvency. For workmanship warranty claims, your options are: claim against the installer’s professional indemnity insurance (if they had it), pursue under the ACL if the defect falls under consumer guarantees, or lodge a complaint with Fair Trading for assistance.

Does ServiceM8 help with solar warranty job tracking?

Yes — ServiceM8 allows you to create a warranty job type linked to the original installation job. This gives you a clear record of what work was done under warranty, what materials were used, and whether it was a manufacturer-covered claim or your own workmanship obligation. This documentation is valuable if the manufacturer disputes your claim for labour reimbursement.

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