Compare solar array prices for Perth homes, understand what’s included and see what can change the installation cost. You don’t need a system size in mind to begin.
See solar array pricesA few small choices. A clearer direction. No contact details needed to explore.
A starting point for discussion, not a calculated system recommendation or price.
1 of 3
No contact details. You can change your mind.
Compare Trina solar array-only starting prices from 3 to 30 kW. Add the inverter or battery pathway your home needs, then account for any additional installation work.
From $2,790*
Explore this sizeFrom $4,190*
Explore this sizeFrom $5,990*
Explore this sizeFrom $6,990*
Explore this sizeFrom $9,690*
Explore this sizePrice on quote
Explore this size*Includes the solar array, mounting and standard installation, GST included, after eligible Zone 3 STCs. Inverter and battery costs are separate. Requires an accompanying approved inverter or integrated storage system. Base pricing assumes a single-level home, one roof face and suitable switchboard access and capacity. Your quote confirms eligibility, equipment and any site-specific work.
These figures explain the basis of a system. An inverter price is not a complete installed system price. Scroll across the table on smaller screens.
| System | Array | Daily average | Suits usage of | STC discount | Inverter from |
|---|---|---|---|---|---|
| 6.6 kW → | 6.6 kW | 30 kWh | up to 30 kWh | $1,710 | Price on quote |
| 10 kW → | 10.5 kW | 45 kWh | up to 45 kWh | $2,736 | Price on quote |
| 13 kW → | 13.2 kW | 60 kWh | up to 60 kWh | $3,458 | Price on quote |
| 19 kW → | 19.8 kW | 90 kWh | up to 90 kWh | $5,168 | Price on quote |
Savings depend on how much of your solar you use as it is generated. We model yours from your bill in the quote.
*Prices are package-contribution guides sourced 16 October 2026, subject to site inspection and current promotions. They are not an offer and are confirmed at quote. STC discount figures are 2026 values at $38/STC, Zone 3. Your quote confirms exact figures. Basis reviewed 2026-08-07.
Panel and inverter selection sits on each size page. Storage is priced separately. See the WA battery rebate page for what applies to a battery.
The panels, inverter and any storage you choose.
Roof access, electrical supply and installation work.
The complete scope and any applicable rebates.
| Variable | Baseline | Indicative uplift | Why it costs more |
|---|---|---|---|
| Double storey | Single storey | $550+ | Height triggers additional fall-arrest and edge-protection requirements, longer cable runs from array to switchboard, and in most cases a larger access plant on site for the day. |
| Tile or terracotta roof | Tin (Colorbond) roof | $110 – $660 | Tile mounting requires individual tile lifting and bracket seating rather than direct rail clamping, and terracotta in particular carries a breakage allowance. It is slower work, it scales with the size of the array, and the roof has to be left watertight. |
| Three-phase supply | Single-phase supply | $400 – $1,200 | Three-phase properties need a three-phase inverter, which sits at a higher price point than its single-phase equivalent. It is not a penalty: three-phase also raises your export headroom and opens larger system sizes. |
| Coastal / salt-mist zone | Inland metropolitan | $200 – $900 | Properties near the coast need corrosion-rated mounting hardware and, on some manufacturers, a specific salt-mist-certified panel to keep the product warranty intact. The uplift buys warranty validity, not just materials. |
| Switchboard upgrade | Compliant existing board | $165 – $2,490+ | Older boards frequently lack the space, main-switch rating or RCD protection a solar connection requires. This one is genuinely unknowable until the board is opened, which is why it is quoted on inspection rather than estimated. |
Perth is not a national average. See how certificates, exported energy and network requirements shape the design.
Perth sits in Zone 3, one of the higher-irradiance rating zones, so a given array earns more certificates here than the same array in the south-east. The number of certificates steps down each 1 January as the deeming period shortens. Certificate value moves with the market. The STC discount column above shows the 2026 basis.
Synergy's DEBS scheme pays approximately 10 c/kWh ex GST for exports between 3 pm and 9 pm, and 2 c/kWh ex GST off-peak. Rates subject to change; eligibility conditions apply; paid on the first 50 kWh exported each day. The gap between those export rates and the 33.26 c/kWh import rate is the whole argument for self-consumption and storage: energy you use is worth several times energy you export.
Since 1 May 2026 a SWIS connection allows up to 30 kVA of aggregate inverter capacity across solar and battery combined. Exports run either through the flexible-export pathway, which needs Emergency Solar Management and VPP-capable equipment, or a fixed 1.5 kW cap. Which pathway you take shapes the design, which is why supply type appears in the matrix above.
Tell us a little about your home. We’ll help bring the equipment, installation and price together.
Start my solar plan$165 – $2,490+
vs Compliant existing board
Older boards frequently lack the space, main-switch rating or RCD protection a solar connection requires. This one is genuinely unknowable until the board is opened, which is why it is quoted on inspection rather than estimated.
