How much do solar panels & batteries cost in Perth?
Perth searchers mostly want solar PV prices, so here they are: a standard 6.6 kW system is priced at $4,200–$8,900 fitted, with $6,300 typical, a 10 kW system $6,300–$12,600 and a 13 kW system for a large home $10,500–$16,800. Perth builds big, with 45.7% of Greater Perth dwellings having four or more bedrooms against 34.8% nationally, and 77.8% of them separate houses with a roof of their own (ABS 2021 Census). That makes the larger systems a realistic option here. Adding a 5 kWh battery costs $5,250–$9,450. All prices include GST and standard installation.
Comparing cities, or after the Australia-wide picture? See the national guide: Solar & battery cost in Australia.
Detailed Pricing — Solar Cost in Perth 2026
| Service | Low | Typical | High |
|---|---|---|---|
| 6.6 kW system (standard) | $4,200installed | $6,300 | $8,900 |
| 6.6 kW system (premium panels) | $6,800installed | $8,400 | $11,000 |
| 10 kW system (standard) | $6,300installed | $9,450 | $12,600 |
| 10 kW system (premium panels) | $10,500installed | $13,100 | $15,750 |
| 13 kW system (large home) | $10,500installed | $13,650 | $16,800 |
| Battery 5 kWh (e.g. Sungrow) | $5,250installed | $7,350 | $9,450 |
| Battery 10–13 kWh (mid-range) | $8,400installed | $11,550 | $15,750 |
| Tesla Powerwall 3 (13.5 kWh) | $12,600installed | $14,700 | $17,850 |
| Hybrid inverter upgrade (battery-ready swap on a typical home system, no battery) | $2,100installed | $3,150 | $4,200 |
| Solar panel cleaning | $160per visit | $260 | $420 |
| System health check / inspection | $160per visit | $260 | $370 |
| Inverter replacement (like-for-like string inverter, typical home system) | $1,050installed | $1,900 | $3,150 |
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Get Perth quotes →Prices include GST. Based on Perth metro area, October 2026. Outer suburbs may vary.
How Solar Costs Vary Across Perth
Perth solar is priced once for the city. A system health check is $160–$370, panel cleaning $160–$420 and an inverter replacement $1,050–$3,150. 77.8% of Greater Perth dwellings were separate houses in the 2021 Census.
What Affects Solar & Battery Costs in Perth
The WA battery rebate
The WA Residential Battery Scheme pays Synergy customers $130 per kWh of usable capacity, up to $1,300, on top of the federal battery discount; Horizon Power customers can get up to $3,800. Synergy is the retailer on the South West Interconnected System that supplies Perth, so a battery with 10 kWh or more of usable capacity collects the full WA amount. Mid-range 10–13 kWh units cost $8,400–$15,750.
A VPP comes with the rebate
The WA rebate and its no-interest loan both require you to join a virtual power plant, through Synergy or an approved alternative product for Synergy customers. The loan goes up to $10,000 over as long as 10 years, for households earning under $210,000 a year combined. The battery also needs at least 5.0 kWh of usable capacity, which is worth checking on any unit sold as 5 kWh.
The federal battery discount
The Cheaper Home Batteries Program cuts the price of an eligible battery, and you never apply for it: the installer takes it off upfront or refunds it once the job is done. Eligibility hinges on three things: solar panels feeding the battery, a place on the Clean Energy Council approved list, and an installer holding SAA accreditation with battery endorsement. A Tesla Powerwall 3 is $12,600–$17,850; check which side of the discount that figure sits.
Panel certificates and solar zone 3
Small-scale technology certificates come off the panel price too, and most quotes, like the prices in our table, already have them taken out. How many a system earns depends on its size and its postcode: the Clean Energy Regulator puts central Perth, postcode 6000, in zone 3 with a rating of 1.382, on a four-zone scale running from 1.622 in zone 1 down to 1.185 in zone 4.
Dry summers, wet winters
December averages just 9.6 mm of rain at Perth Metro, January and February both average tops above 31 °C, and July is the wettest month at 147.0 mm (BOM averages). Long clear summer days suit solar, but months without rain also mean nothing rinses the panels. A professional clean costs $160–$420, and the winter rain does some of that job for free.
Inverters: replace or upgrade
Inverter cost is a common Perth question. Swapping a dead string inverter for the same type costs $1,050–$3,150, while moving to a battery-capable hybrid model now, ahead of any battery, is $2,100–$4,200. If a battery is likely in the next few years, the hybrid swap can save buying a second inverter later.
Licensed work and your certificate
WA law requires all electrical work to be done by someone holding the relevant electrical licence, and Building and Energy runs an online licence search to check. When the work is finished you should get an Electrical Safety Certificate; if it has not arrived within 28 days, ask the electrical contractor for it. A later system health check costs $160–$370.
How to Save Money on Solar Cost in Perth
Solar PV system prices in Perth by size, plus inverter and battery costs
Solar PV prices in Perth in 2026 scale with system size: a standard 6.6 kW system costs $4,200–$8,900 installed, with most averaging $6,300; a 10 kW system $6,300–$12,600 (typically $9,450); and a 13 kW-plus commercial system $10,500–$16,800. Premium panels lift the same sizes to $6,800–$11,000 for 6.6 kW and $10,500–$15,750 for 10 kW.
The inverter is the part most likely to need replacing before the panels do: a like-for-like inverter replacement in Perth costs $1,050–$3,150 installed, while a hybrid inverter upgrade that makes the system battery-ready runs $2,100–$4,200.
Adding storage: a 5 kWh battery costs $5,250–$9,450 installed, a 10–13 kWh mid-range battery $8,400–$15,750, and a Tesla Powerwall 3 (13.5 kWh) $12,600–$17,850. Ongoing, a system health check or inspection is $160–$370 per visit and solar panel cleaning $160–$420.
Frequently Asked Questions — Solar Cost in Perth
Our Methodology
These are independent estimates from public cost guides, marketplaces and industry rate data, and no tradesperson can influence them, so always get a few quotes. Last reviewed October 2026. Read our full methodology →
Five deep-dives on Perth solar & battery cost
