Solar Panels in Perth
WA · STC Zone 3 · 5 sun hrs/day
A 6.6 kW solar system in Perth produces around 10,238 kWh/yr, costs about $5,500 after the STC rebate, and pays back in roughly 4.1 years. Compare quotes from accredited local installers.
Solar in Perth, WA
Perth (6000) sits in STC Zone 3 and averages 5 peak sun hours per day. Rooftop solar is connected via Western Power and exports earn a feed-in tariff around 2.5 c/kWh. For a typical 6.6 kW install, that works out to ~10,238 kWh/yr of generation and roughly $1,349 in combined bill offset and export credits each year.
| Location | Perth, WA (6000) |
|---|---|
| Distributor (DNSP) | Western Power |
| STC rebate zone | Zone 3 |
| Avg peak sun hours | 5 hours/day |
| Typical 6.6 kW output | ~10,238 kWh/yr |
| Installed cost (6.6 kW) | ~$5,500 after STC rebate |
| Federal STC rebate | ~$2,706 off install |
| Typical feed-in tariff | 2.25–10 c/kWh (DEBS time-of-export) (≈ 2.5 c/kWh used) |
| Est. annual savings | ~$1,349/yr |
| Payback period | ~4.1 years |
Solar system sizes & prices for Perth
Output and savings are estimated using Perth's 5 peak sun hours/day and 2.5 c/kWh feed-in tariff.
| System | Annual output | Installed (post-STC) | Est. annual savings | Best for |
|---|---|---|---|---|
| 6.6 kW | 10,238 kWh | ~$5,500 | $1,349/yr | Most popular AU system size — matches the 5 kW inverter rule and maximises STC rebate. |
| 10 kW | 15,513 kWh | ~$8,800 | $2,044/yr | For larger households (4–6 people) or homes with batteries planned. |
| 13.2 kW | 20,477 kWh | ~$11,000 | $2,698/yr | Large-roof / EV charging households. May need DNSP approval to export full output. |
Solar rebates for Perth households
Federal STC rebate
Small-scale Technology Certificates (STCs) are issued under the federal Renewable Energy Target. WA sits in Zone 3, worth about $2,706 off a 6.6 kW install. Your installer claims it on your behalf as a point-of-sale discount.
WA state programs
WA Residential Battery Scheme (Synergy customers: $5,000 rebate + interest-free loan up to $10,000) plus federal Cheaper Home Batteries Program.
Solar battery storage in Perth
With grid power at ~33 c/kWh and Perth's feed-in tariff around 2.5 c/kWh, every kWh you store instead of export is worth an extra 30.5 c. The federal Cheaper Home Batteries Program (launched 2025) takes approximately 30% off battery installation costs, dramatically improving payback for WA households.
Solar in Perth — common questions
How much does solar cost in Perth?
A standard 6.6 kW solar system in Perth typically costs around $5,500 installed, after the federal STC rebate of approximately $2,706 (WA is in STC Zone 3). A 10 kW system runs about $8,800. Final price depends on roof complexity, inverter brand and panel quality.
How much energy will solar generate in Perth?
Perth averages around 5 peak sun hours per day, so a 6.6 kW system will produce roughly 10,238 kWh per year after performance losses. A 10 kW system produces around 15,513 kWh/yr.
What's the payback period for solar in Perth?
For a typical Perth household, a 6.6 kW system pays itself back in around 4.1 years — based on $5,500 installed, ~$1,349/yr in combined bill savings and feed-in credits, and a feed-in tariff of ~2.5 c/kWh on the Western Power network.
What rebates apply to solar in WA?
Perth households can claim the federal Small-scale Technology Certificate (STC) rebate, worth approximately $2,706 on a 6.6 kW install in Zone 3. WA Residential Battery Scheme (Synergy customers: $5,000 rebate + interest-free loan up to $10,000) plus federal Cheaper Home Batteries Program.
Who is the distributor for solar connections in Perth?
Solar installations in Perth connect to the grid via Western Power. Your installer lodges the connection application and notifies the distributor of the export limit — no separate paperwork required from you.
Is a solar battery worth adding in Perth?
With Perth's feed-in tariff sitting around 2.5 c/kWh and grid power at ~33 c/kWh, storing solar instead of exporting it now pays back faster than it did when FiTs were higher. The federal Cheaper Home Batteries Program (launched 2025) takes ~30% off battery install cost, dramatically improving battery payback in WA.
Also compare energy plans in Perth.
Indicative figures. Updated .