Gridly
WA 6225 · Boyup Brook
Solar Panel Installation in Collie, WA
Find a vetted solar installer in Collie. Compare quotes, check local solar data, and get a system designed for your roof.
Get Free Solar QuotesSolar Snapshot for Collie
Key data for sizing a solar system in Collie, WA 6225.
9,164
Population
5.2/day
Peak Sun Hours
10,021
Est. Annual Output (6.6 kW)
$1,413
Est. Annual Savings
3.6 yrs
Est. Payback (6.6 kW)
$3,159
STC Rebate (6.6 kW)
Zone 2
Dwelling Mix in Collie
Breakdown of dwelling types based on census data — relevant for understanding rooftop solar potential.
Houses
93%
3,279 dwellings
Townhouses
3%
108 dwellings
Apartments
3%
104 dwellings
Collie is predominantly freestanding houses, ideal for rooftop solar installation.
Solar Adoption in Collie 6225
Installation data from the Clean Energy Regulator, refreshed monthly.
2,166
Solar Systems Installed
Since 2001
5.1 kW
Avg System Size
11.0 MW
Total Installed Capacity
63
Battery Systems
Collie (6225) has 2,166 registered solar panel installations with a combined capacity of 11.0 MW. The average system size in this postcode is 5.1 kW. That's roughly 62% of dwellings with rooftop solar.
Installations fell 40% in 2025 compared to 2024's 144 systems.
Is Solar Worth It in Collie?
Collie gets 5.2 peak sun hours per day — above the national average. A 6.6 kW system here would produce roughly 10,021 kWh per year, saving an estimated $1,413 annually and paying itself off in 3.6 years.
At $5,041 after rebates, the upfront cost represents 8% of Collie's median household income ($64,480/year). Most households finance this over 3–5 years, with loan repayments typically offset by immediate savings.
Collie already has strong solar uptake — roughly 62% of dwellings have rooftop solar, which is above the Western Australia average of 36%.
With a payback under 4 years and 20+ years of remaining system life, solar in Collie 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 Collie?
With 5.2 peak sun hours per day, Collie receives above-average solar irradiance for Australia. A standard 6.6 kW rooftop system here can generate approximately 10,021 kWh per year, saving an estimated $1,413 annually on electricity bills.
Collie has a population of 9,164 across 3,520 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 Collie is $64,480 per year. At $5,041 after rebates, a 6.6 kW system represents 8% of annual household income, with savings that continue for 20+ years after the 3.6-year payback.
With car ownership at 93% of households, many residents in Collie 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 Collie
Based on 5.2 peak sun hours/day, 31c/kWh electricity, and STC Zone 2 rebate.
| System Size | Annual Output | Annual Savings | Cost After Rebate | Payback |
|---|---|---|---|---|
| 5 kW | 7,592 kWh | $1,070 | $4,121 $2,379 STC rebate | 3.9 yrs |
| 6.6 kW Most popular | 10,021 kWh | $1,413 | $5,041 $3,159 STC rebate | 3.6 yrs |
| 10 kW | 15,184 kWh | $2,141 | $6,742 $4,758 STC rebate | 3.1 yrs |
| 13 kW | 19,739 kWh | $2,783 | $8,299 $6,201 STC rebate | 3 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 Collie.
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 Collie get? ▼
Collie receives approximately 5.2 peak sun hours per day, based on its warm temperate climate zone. This means a standard 6.6 kW system can generate around 10,021 kWh annually.
What size solar system do I need in Collie? ▼
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 Collie? ▼
A 6.6 kW solar system in Collie costs approximately $8,200 before rebates. Collie 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 Collie? ▼
A 6.6 kW solar system in Collie has an estimated payback period of 3.6 years, based on 5.2 peak sun hours per day and annual savings of $1,413. After the payback period, the system continues generating free electricity for its remaining 20+ year lifespan.
Do I need council approval for solar in Collie? ▼
In Western Australia, most residential solar installations are considered exempt development. Heritage-listed properties or certain zones in Boyup Brook may require approval. Your installer will confirm during the site assessment.
How Collie Compares to Nearby Suburbs
Solar potential compared with neighbouring suburbs in the Boyup Brook area.
| Suburb | Sun Hours | 6.6 kW Output | Payback | Solar Adoption |
|---|---|---|---|---|
| Collie 6225 | 5.2h | 10,021 kWh | 3.6 yrs | 62% |
| Bridgetown 6255 | 5.2h | 10,021 kWh | 3.6 yrs | 61% |
| Muja 6225 | 5.2h | 10,021 kWh | 3.6 yrs | 62% |
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 Collie.
Related Products
Data sources: Clean Energy Regulator (installation counts), ABS 2021 Census (population and dwellings), Bureau of Meteorology (solar exposure). Solar output estimates assume north-facing panels with no shading. Electricity rates are state averages and may differ from your retailer's pricing. Get a personalised quote for accurate savings.