Solar installer deposit protection in Perth: what to pay and what protection you have
Solar installations in Perth typically require a deposit of 10–30% before installation. This guide explains how much is normal, what protection exists if your installer fails to complete the job or goes out of business, and what to check before paying a deposit.

Paying a solar deposit before installation is standard practice in Perth — but the amount, timing, and protection varies significantly between installers. Here's what to expect and what protection you have.
What is a normal solar deposit in Perth?
Most Perth solar installers request a deposit of 10–30% of the total system cost at contract signing, with the balance due on or after installation.
| Deposit level | Assessment | |---|---| | 10–20% of total | Standard and reasonable | | 25–33% of total | High but not unusual for larger systems | | 50%+ of total | Unusually high — ask why | | Full payment in advance | Significant risk — avoid unless you have strong relationship/trust |
Example: A $12,000 system with 20% deposit = $2,400 upfront, $9,600 on completion. This is standard.
Installers with strong order pipelines and equipment pre-ordering costs may legitimately request higher deposits. Newer installers or those offering unusually low quotes may also ask for higher deposits — which is itself a flag to investigate.
What protection do Perth solar buyers have?
1. Australian Consumer Law (ACL)
Your solar contract is subject to the Australian Consumer Law. Under the ACL:
- The system must be "fit for purpose" and match its description
- If the installer fails to complete the installation as contracted, you have remedies including refund of the deposit
The ACL applies regardless of what the contract says — contract terms that waive ACL rights are not enforceable.
2. WA Department of Energy, Mines, Industry Regulation and Safety (DEMIRS)
Solar electrical installation in WA requires a licensed electrical contractor. If the installer is not a licensed electrical contractor (or working with one), the installation is non-compliant and the work may need to be redone. DEMIRS can be contacted if you suspect unlicensed work.
3. Clean Energy Council (CEC) accreditation
CEC-accredited installers are bound by the CEC's code of conduct, which includes fair contract terms and complaint handling. If a CEC-accredited installer fails to perform, the CEC complaint process is a route to resolution — though the CEC is not a compensating authority.
4. Credit card payment protection
If you pay your deposit by credit card, Section 75 of the Consumer Credit Act (and its Australian equivalent under the National Consumer Credit Protection Act) provides chargeback protection if the installer fails to deliver the service. This is real protection — if an installer collapses after taking your deposit, a credit card chargeback can recover the funds.
Paying by bank transfer (EFT) provides no similar protection — if the installer fails, recovery is through civil process only.
What to check before paying any deposit
1. Is the installer CEC-accredited? Verify at solaraccreditation.com.au. This is a free public lookup. A CEC-accredited installer has passed training requirements, is bound by a code of conduct, and carries the accreditation that the WA Battery Scheme and STC rebate require.
2. Is the company registered (ABN active)? Check the ABN at abn.business.gov.au. Verify the ABN on the quote matches the company's registered name. A quote from an unregistered business or one with a recently cancelled ABN is a flag.
3. Does the installer have a physical Perth presence? An installer with a local Perth address, physical premises, and a trackable history is lower-risk than an interstate company operating without local office presence.
4. What are the payment milestone terms? The contract should specify what triggers the balance payment — typically "on practical completion of installation" or "after connection to grid." Avoid contracts that demand full balance before final commissioning.
5. How long has the company been operating? A business with 5+ years of Perth operations and traceable reviews (Google, ProductReview) is lower risk than a new entrant offering the lowest price.
What happens if your installer fails mid-job?
The installer takes your deposit and disappears: Pursue via ACL complaint to Consumer Protection WA (consumerprotection.wa.gov.au) and credit card chargeback if paid by card. If the deposit amount is significant, consult a consumer law lawyer.
The installer completes the physical install but doesn't arrange connection: Western Power approval and Synergy metering are installer responsibilities. If the installer is non-responsive post-installation, contact Western Power and Synergy directly — they can advise on the connection status.
The installer completes the job but the system underperforms: This is typically a warranty claim. Document with monitoring data and escalate via the ACL remedies or the panel/inverter manufacturer's warranty directly if the installer is unresponsive.
Payment method recommendation
- Deposit: Credit card where possible (chargeback protection)
- Balance: Bank transfer on confirmed commissioning is standard
A 10–25% deposit before installation is standard and reasonable in Perth. The key protections are CEC accreditation verification, credit card payment for the deposit, and checking that the balance is only due after commissioning. If an installer asks for 50%+ or full payment in advance without a strong established track record, that warrants caution.
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