Gridly
VIC 3038 · Brimbank
Solar Panel Installation in Keilor Downs, VIC
Find a vetted solar installer in Keilor Downs. Compare quotes, check local solar data, and get a system designed for your roof.
Get Free Solar QuotesSolar Snapshot for Keilor Downs
Key data for sizing a solar system in Keilor Downs, VIC 3038.
26,703
Population
3.8/day
Peak Sun Hours
7,323
Est. Annual Output (6.6 kW)
$1,058
Est. Annual Savings
3.8 yrs
Est. Payback (6.6 kW)
$2,808
STC Rebate (6.6 kW)
Zone 3
Dwelling Mix in Keilor Downs
Breakdown of dwelling types based on census data — relevant for understanding rooftop solar potential.
Houses
88%
7,902 dwellings
Townhouses
11%
976 dwellings
Apartments
1%
48 dwellings
Keilor Downs is predominantly freestanding houses, ideal for rooftop solar installation.
Solar Adoption in Keilor Downs 3038
Installation data from the Clean Energy Regulator, current to May 2026.
3,271
Solar Systems Installed
Since 2001
6 kW
Avg System Size
19.6 MW
Total Installed Capacity
283
Battery Systems
Keilor Downs (3038) has 3,271 registered solar panel installations with a combined capacity of 19.6 MW. The average system size in this postcode is 6 kW. That's roughly 13% of dwellings with rooftop solar.
Installations fell 11% in 2025 compared to 2024's 194 systems.
Is Solar Worth It in Keilor Downs?
Keilor Downs gets 3.8 peak sun hours per day — slightly below the national average. A 6.6 kW system here would produce roughly 7,323 kWh per year, saving an estimated $1,058 annually and paying itself off in 3.8 years.
At $3,992 after rebates, the upfront cost represents 4% of Keilor Downs's median household income ($99,944/year). A relatively small outlay for a 20+ year asset that generates returns from day one.
Around 13% of dwellings in Keilor Downs have solar, below the Victoria average of 28%. 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 Keilor Downs is one of the stronger return-on-investment cases in Victoria. The question isn’t really whether solar is worth it here — it’s what size system to get.
Why Install Solar in Keilor Downs?
Keilor Downs receives 3.8 peak sun hours daily. While this is lower than northern states, a well-sized system still generates significant savings. A 6.6 kW system can produce around 7,323 kWh per year, saving approximately $1,058 annually.
Keilor Downs has a population of 26,703 across 25,829 dwellings. Victoria's growing electricity costs, currently around 32c/kWh, make solar a practical way to reduce household bills.
The median household income in Keilor Downs is $99,944 per year. At $3,992 after rebates, a 6.6 kW system represents 4% of annual household income, with savings that continue for 20+ years after the 3.8-year payback.
With car ownership at 95% of households, many residents in Keilor Downs 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 Keilor Downs
Based on 3.8 peak sun hours/day, 32c/kWh electricity, and STC Zone 3 rebate.
| System Size | Annual Output | Annual Savings | Cost After Rebate | Payback |
|---|---|---|---|---|
| 5 kW | 5,548 kWh | $802 | $2,955 $2,145 STC rebate | 3.7 yrs |
| 6.6 kW Most popular | 7,323 kWh | $1,058 | $3,992 $2,808 STC rebate | 3.8 yrs |
| 10 kW | 11,096 kWh | $1,603 | $5,810 $4,290 STC rebate | 3.6 yrs |
| 13 kW | 14,425 kWh | $2,084 | $7,523 $5,577 STC rebate | 3.6 yrs |
Estimates assume 80% system efficiency, 35% self-consumption rate, 5c/kWh feed-in tariff, and STC Zone 3 ($39/STC, 8-year deeming period). Actual results vary based on roof orientation, shading, and usage patterns.
Solar Rebates in Victoria
Available incentives that reduce the cost of solar installation in VIC.
Solar Homes Program offers up to $1,400 rebate on solar panel systems for eligible households.
STCs provide an additional $2,500 to $4,000 upfront discount depending on system size.
Popular Solar Panels
Top-rated panels available for installation in Keilor Downs.
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 Keilor Downs get? ▼
Keilor Downs receives approximately 3.8 peak sun hours per day, based on its cool temperate climate zone. This means a standard 6.6 kW system can generate around 7,323 kWh annually.
What size solar system do I need in Keilor Downs? ▼
The right system size depends on your electricity usage. Average household consumption in Victoria is 15 to 19 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 Keilor Downs? ▼
A 6.6 kW solar system in Keilor Downs costs approximately $8,200 before rebates. Keilor Downs is in STC Zone 3, which provides a rebate of $2,808 on a 6.6 kW system. An additional $1,400 state rebate applies. After rebates, expect to pay around $3,992.
What is the payback period for solar in Keilor Downs? ▼
A 6.6 kW solar system in Keilor Downs has an estimated payback period of 3.8 years, based on 3.8 peak sun hours per day and annual savings of $1,058. After the payback period, the system continues generating free electricity for its remaining 20+ year lifespan.
Do I need council approval for solar in Keilor Downs? ▼
In Victoria, most residential solar installations do not require a planning permit. Heritage overlays or specific planning zones in Brimbank may have restrictions. Your installer will check this during the quoting process.
How Keilor Downs Compares to Nearby Suburbs
Solar potential compared with neighbouring suburbs in the Brimbank area.
| Suburb | Sun Hours | 6.6 kW Output | Payback | Solar Adoption |
|---|---|---|---|---|
| Keilor Downs 3038 | 3.8h | 7,323 kWh | 3.8 yrs | 13% |
| Airport West 3042 | 3.8h | 7,323 kWh | 3.8 yrs | 9% |
| Caroline Springs 3023 | 3.8h | 7,323 kWh | 3.8 yrs | 14% |
| Deer Park 3023 | 3.8h | 7,323 kWh | 3.8 yrs | 14% |
| Sunshine Marketplace 3020 | 3.8h | 7,323 kWh | 3.8 yrs | 11% |
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 Keilor Downs.
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.