Solar Panels in Perth, WA
Perth solar output is strong, but export limits and WA market rules can change the best system size.
Sunlight
kWh/m2/day
Cost
Indicative 6.6kW
10kW
Indicative guide
Feed-in
Indicative c/kWh
Payback
Typical range
What to check in Perth
Use these points before comparing quotes.
Rebate context: Federal solar STCs usually reduce the quoted solar price. WA Residential Battery Scheme may add up to $1,300 for synergy customers or $3,800 for horizon power customers if eligible; wa no-interest battery loan is finance support, not a rebate deduction.
Climate risk: High heat and long sun exposure make inverter placement and panel warranty important.
Roof design: Good sun makes oversizing tempting, but export limits can reduce value.
Tariff check: Check Synergy or local network export rules before assuming all surplus power is paid.
Local quote checklist
- Confirm Western Power export approval requirements.
- Ask for a quote option that keeps battery installation simple later.
- Check whether a west-facing string helps afternoon usage.
- Check export limits and battery readiness before choosing system size.
Ready to compare quotes in Perth?
Use the price explorer to check whether a quote looks low, fair, or high before you commit.
Last reviewed May 2026
Local solar figures are indicative and should be checked against your roof, electricity bill, tariff, network export limit, and current rebate eligibility.