Gridly
WA 6160 · Fremantle
Solar Panel Installation in Fremantle, WA
Find a vetted solar installer in Fremantle. Compare quotes, check local solar data, and get a system designed for your roof.
Get Free Solar QuotesSolar Snapshot for Fremantle
Key data for sizing a solar system in Fremantle, WA 6160.
9,251
Population
5.3/day
Peak Sun Hours
10,214
Est. Annual Output (6.6 kW)
$1,440
Est. Annual Savings
3.5 yrs
Est. Payback (6.6 kW)
$3,159
STC Rebate (6.6 kW)
Zone 2
Dwelling Mix in Fremantle
Breakdown of dwelling types based on census data — relevant for understanding rooftop solar potential.
Houses
40%
1,622 dwellings
Townhouses
32%
1,306 dwellings
Apartments
27%
1,116 dwellings
Fremantle has a mix of dwelling types, with 40% freestanding houses and 27% apartments. Most freestanding homes are well-suited for rooftop solar installation, while apartment residents may need to explore shared solar or community energy options.
Solar Adoption in Fremantle 6160
Installation data from the Clean Energy Regulator, refreshed monthly.
1,203
Solar Systems Installed
Since 2001
5.9 kW
Avg System Size
7.1 MW
Total Installed Capacity
101
Battery Systems
Fremantle (6160) has 1,203 registered solar panel installations with a combined capacity of 7.1 MW. The average system size in this postcode is 5.9 kW. That's roughly 30% of dwellings with rooftop solar.
Installations fell 24% in 2025 compared to 2024's 80 systems.
Is Solar Worth It in Fremantle?
Fremantle gets 5.3 peak sun hours per day — above the national average. A 6.6 kW system here would produce roughly 10,214 kWh per year, saving an estimated $1,440 annually and paying itself off in 3.5 years.
At $5,041 after rebates, the upfront cost represents 5% of Fremantle's median household income ($94,744/year). A relatively small outlay for a 20+ year asset that generates returns from day one.
Around 30% of dwellings in Fremantle 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 Fremantle 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 Fremantle?
With 5.3 peak sun hours per day, Fremantle receives above-average solar irradiance for Australia. A standard 6.6 kW rooftop system here can generate approximately 10,214 kWh per year, saving an estimated $1,440 annually on electricity bills.
Fremantle has a population of 9,251 across 4,068 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 Fremantle is $94,744 per year. At $5,041 after rebates, a 6.6 kW system represents 5% of annual household income, with savings that continue for 20+ years after the 3.5-year payback.
With car ownership at 87% of households, many residents in Fremantle 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 Fremantle
Based on 5.3 peak sun hours/day, 31c/kWh electricity, and STC Zone 2 rebate.
| System Size | Annual Output | Annual Savings | Cost After Rebate | Payback |
|---|---|---|---|---|
| 5 kW | 7,738 kWh | $1,091 | $4,121 $2,379 STC rebate | 3.8 yrs |
| 6.6 kW Most popular | 10,214 kWh | $1,440 | $5,041 $3,159 STC rebate | 3.5 yrs |
| 10 kW | 15,476 kWh | $2,182 | $6,742 $4,758 STC rebate | 3.1 yrs |
| 13 kW | 20,119 kWh | $2,837 | $8,299 $6,201 STC rebate | 2.9 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 Fremantle.
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 Fremantle get? ▼
Fremantle receives approximately 5.3 peak sun hours per day, based on its warm temperate climate zone. This means a standard 6.6 kW system can generate around 10,214 kWh annually.
What size solar system do I need in Fremantle? ▼
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 Fremantle? ▼
A 6.6 kW solar system in Fremantle costs approximately $8,200 before rebates. Fremantle 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 Fremantle? ▼
A 6.6 kW solar system in Fremantle has an estimated payback period of 3.5 years, based on 5.3 peak sun hours per day and annual savings of $1,440. After the payback period, the system continues generating free electricity for its remaining 20+ year lifespan.
Do I need council approval for solar in Fremantle? ▼
In Western Australia, most residential solar installations are considered exempt development. Heritage-listed properties or certain zones in Fremantle may require approval. Your installer will confirm during the site assessment.
How Fremantle Compares to Nearby Suburbs
Solar potential compared with neighbouring suburbs in the Fremantle area.
| Suburb | Sun Hours | 6.6 kW Output | Payback | Solar Adoption |
|---|---|---|---|---|
| Fremantle 6160 | 5.3h | 10,214 kWh | 3.5 yrs | 30% |
| Bibra Lake 6163 | 5.3h | 10,214 kWh | 3.5 yrs | 52% |
| Bull Creek 6163 | 5.3h | 10,214 kWh | 3.5 yrs | 52% |
| Cockburn 6163 | 5.3h | 10,214 kWh | 3.5 yrs | 52% |
| O'Connor 6163 | 5.3h | 10,214 kWh | 3.5 yrs | 52% |
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 Fremantle.
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.