Gridly
WA 6018 · Stirling
Solar Panel Installation in Stirling, WA
Find a vetted solar installer in Stirling. Compare quotes, check local solar data, and get a system designed for your roof.
Get Free Solar QuotesSolar Snapshot for Stirling
Key data for sizing a solar system in Stirling, WA 6018.
42,250
Population
5/day
Peak Sun Hours
9,636
Est. Annual Output (6.6 kW)
$1,359
Est. Annual Savings
3.7 yrs
Est. Payback (6.6 kW)
$3,159
STC Rebate (6.6 kW)
Zone 2
Dwelling Mix in Stirling
Breakdown of dwelling types based on census data — relevant for understanding rooftop solar potential.
Houses
66%
10,560 dwellings
Townhouses
28%
4,436 dwellings
Apartments
7%
1,048 dwellings
Stirling is predominantly freestanding houses, ideal for rooftop solar installation.
Solar Adoption in Stirling 6018
Installation data from the Clean Energy Regulator, current to May 2026.
7,390
Solar Systems Installed
Since 2001
5.4 kW
Avg System Size
40.0 MW
Total Installed Capacity
675
Battery Systems
Stirling (6018) has 7,390 registered solar panel installations with a combined capacity of 40.0 MW. The average system size in this postcode is 5.4 kW. That's roughly 19% of dwellings with rooftop solar.
Installations fell 18% in 2025 compared to 2024's 471 systems.
Is Solar Worth It in Stirling?
Stirling gets 5 peak sun hours per day — above the national average. A 6.6 kW system here would produce roughly 9,636 kWh per year, saving an estimated $1,359 annually and paying itself off in 3.7 years.
At $5,041 after rebates, the upfront cost represents 4% of Stirling's median household income ($114,920/year). A relatively small outlay for a 20+ year asset that generates returns from day one.
Around 19% of dwellings in Stirling have solar, below the Western Australia average of 36%. This means there's significant room for more installations — and early adopters tend to benefit most from current rebate levels before they taper off.
With a payback under 4 years and 20+ years of remaining system life, solar in Stirling is one of the stronger return-on-investment cases in Western Australia. The question isn’t really whether solar is worth it here — it’s what size system to get.
Why Install Solar in Stirling?
With 5 peak sun hours per day, Stirling receives above-average solar irradiance for Australia. A standard 6.6 kW rooftop system here can generate approximately 9,636 kWh per year, saving an estimated $1,359 annually on electricity bills.
Stirling has a population of 42,250 across 39,060 dwellings. Western Australia's solar-friendly climate combined with electricity rates around 31c/kWh makes solar a strong choice for WA households.
The median household income in Stirling is $114,920 per year. At $5,041 after rebates, a 6.6 kW system represents 4% of annual household income, with savings that continue for 20+ years after the 3.7-year payback.
With car ownership at 94% of households, many residents in Stirling could benefit from pairing solar with a home EV charger. Charging an electric vehicle from rooftop solar can save $1,000 to $1,500 per year compared to grid charging.
Estimated Solar Output & Payback in Stirling
Based on 5 peak sun hours/day, 31c/kWh electricity, and STC Zone 2 rebate.
| System Size | Annual Output | Annual Savings | Cost After Rebate | Payback |
|---|---|---|---|---|
| 5 kW | 7,300 kWh | $1,029 | $4,121 $2,379 STC rebate | 4 yrs |
| 6.6 kW Most popular | 9,636 kWh | $1,359 | $5,041 $3,159 STC rebate | 3.7 yrs |
| 10 kW | 14,600 kWh | $2,059 | $6,742 $4,758 STC rebate | 3.3 yrs |
| 13 kW | 18,980 kWh | $2,676 | $8,299 $6,201 STC rebate | 3.1 yrs |
Estimates assume 80% system efficiency, 35% self-consumption rate, 5c/kWh feed-in tariff, and STC Zone 2 ($39/STC, 8-year deeming period). Actual results vary based on roof orientation, shading, and usage patterns.
Solar Rebates in Western Australia
Available incentives that reduce the cost of solar installation in WA.
STCs provide an upfront discount of $2,500 to $4,000 depending on system size.
Synergy and Horizon Power offer time-of-use tariffs that improve solar self-consumption economics.
Popular Solar Panels
Top-rated panels available for installation in Stirling.
Solahart Silhouette Series
455W, 22.8% efficiency
$165
Solahart SunCell Series
440W, 22% efficiency
$140
Canadian Solar TOPHiKu 6
440W, 22.5% efficiency
$130
Trina Solar Vertex S+
440W, 22% efficiency
$120
How Solar Installation Works
Site Assessment and Quote
An installer visits your property, assesses your roof, checks shading, and provides a detailed quote based on your energy usage.
System Design and Approval
Your system is designed to maximise output. Council approval may be needed for heritage properties, but most residential installs are exempt.
Installation
A residential solar installation typically takes one day. The team mounts panels, installs the inverter, and connects the wiring.
Grid Connection and Meter
Your installer lodges paperwork with your distributor. Once approved, your meter is upgraded to a bi-directional meter and you start exporting.
Frequently Asked Questions
How many peak sun hours does Stirling get? ▼
Stirling receives approximately 5 peak sun hours per day, based on its warm temperate climate zone. This means a standard 6.6 kW system can generate around 9,636 kWh annually.
What size solar system do I need in Stirling? ▼
The right system size depends on your electricity usage. Average household consumption in Western Australia is 17 to 21 kWh per day. A 6.6 kW system suits most homes, while larger households or those with pools or EV chargers may benefit from a 10 kW or 13 kW system.
How much does solar installation cost in Stirling? ▼
A 6.6 kW solar system in Stirling costs approximately $8,200 before rebates. Stirling is in STC Zone 2, which provides a rebate of $3,159 on a 6.6 kW system. After rebates, expect to pay around $5,041.
What is the payback period for solar in Stirling? ▼
A 6.6 kW solar system in Stirling has an estimated payback period of 3.7 years, based on 5 peak sun hours per day and annual savings of $1,359. After the payback period, the system continues generating free electricity for its remaining 20+ year lifespan.
Do I need council approval for solar in Stirling? ▼
In Western Australia, most residential solar installations are considered exempt development. Heritage-listed properties or certain zones in Stirling may require approval. Your installer will confirm during the site assessment.
How Stirling Compares to Nearby Suburbs
Solar potential compared with neighbouring suburbs in the Stirling area.
| Suburb | Sun Hours | 6.6 kW Output | Payback | Solar Adoption |
|---|---|---|---|---|
| Stirling 6018 | 5h | 9,636 kWh | 3.7 yrs | 19% |
| Balcatta 6914 | 5h | 9,636 kWh | 4 yrs | — |
| Churchlands 6018 | 5h | 9,636 kWh | 3.7 yrs | 19% |
| City Beach 6015 | 5h | 9,636 kWh | 3.7 yrs | 20% |
| Gwelup 6018 | 5h | 9,636 kWh | 3.7 yrs | 19% |
All estimates assume a 6.6 kW system. Sun hours, output, and payback are based on the same methodology. Solar adoption shows CER-registered installations as a percentage of dwellings.
Nearby Suburbs
Solar installers in suburbs near Stirling.
Related Products
Solar output estimates use Bureau of Meteorology irradiance data and assume north-facing panels with no shading. Population and dwelling data: ABS 2021 Census. Electricity rates are state averages and may differ from your retailer's pricing. Get a personalised quote for accurate savings.