Solar Panel Cost Australia 2026
A typical 6.6kW solar installation in Australia in 2026 costs between $4,500 and $7,000 after the federal STC discount. That's roughly $250 to $400 per panel for a 18-panel system, installed and connected. Before the discount, the same system might be priced at $6,000 to $9,000.
Prices vary more than most people expect. A cheap system from a volume installer can come in under $4,000. A premium setup with high-efficiency panels, microinverters, and a reputable brand can push past $8,000. The difference shows up in performance, warranty, and durability.
Solar Panel Installation Cost in Australia
Most quotes combine hardware and labour, so "solar panel installation cost" or "solar power installation cost" usually means the full installed system price, not panels only. For a standard 6.6kW setup, installation-related costs are typically:
- Panels and inverter: usually the largest part of the quote
- Installation labour: roof work, mounting, wiring, and commissioning
- Site complexity: two-storey homes, tile roofs, and split arrays add cost
- Electrical upgrades: switchboard or compliance work where required
Solar System Pricing by Size
Here are typical price ranges for common system sizes, after the federal STC discount has been applied. These assume a standard single-storey installation with a simple roof. Two-storey homes, tile roofs, or complex rooflines add $500 to $1,500.
- 3kW system (8-10 panels): $3,000 - $4,500
- 5kW system (12-14 panels): $3,800 - $5,500
- 6.6kW system (16-18 panels): $4,500 - $7,000
- 8kW system (20-22 panels): $6,000 - $9,000
- 10kW system (24-28 panels): $7,000 - $10,500
What $/Watt Tells You
A cleaner way to compare quotes is dollars per watt. A 6.6kW system at $5,500 works out to $0.83 per watt. A budget 6.6kW system at $4,000 is $0.61 per watt. Premium systems often run $1.00 to $1.20 per watt.
Generally, anything under $0.70 per watt for a standard 6.6kW system signals budget components. That doesn't automatically mean bad quality, but it's worth checking the panel brand, inverter type, and warranty terms more carefully.
Cost of a Single Solar Panel
Asking how much one solar panel costs is a bit like asking how much one tyre costs. The panel itself is cheap — $200 to $400 for a good 400W-500W panel from a reputable brand. But the installed cost includes the inverter, racking, wiring, labour, and overheads. That's why buying panels individually almost never makes sense.
For context, a 440W panel from a Tier 1 manufacturer like Jinko, LONGi, or Trina wholesales for around $150 to $250. The retail markup, combined with installation costs, brings the per-panel cost in a full system to $250 to $400.
4-Bedroom House Costs
A typical 4-bedroom home uses 15 to 25 kWh per day. Most households in this range install a 6.6kW system, which covers 60-80% of their daytime usage. The cost: $4,500 to $7,000 installed. Upgrade to an 8kW system if you have a pool, ducted air conditioning, or an electric vehicle.
What Affects the Price
Panel quality. Tier 1 panels cost more but typically have better degradation warranties (80%+ output after 25 years) and higher efficiency.
Inverter type. String inverters are standard and cost-effective. Microinverters add $1,000 to $2,000 to the total but improve per-panel performance on shaded or complex roofs.
Roof complexity. A simple tin roof on a single-storey home is the cheapest to install. Tile roofs, two-storey homes, and roofs with multiple angles all add labour time and safety equipment costs.
Location. Prices vary by state and city. Sydney and Melbourne are competitive. Regional areas often cost more due to travel and fewer installer options.
STC discount. The federal STC scheme reduces the upfront cost by roughly $1,200 to $1,600 for a 6.6kW system in 2026, depending on your location[1]. State rebates like Victoria's Solar Homes program can add another $1,400 off[2].
Solar and Battery Package Costs
Adding a battery roughly doubles the installation cost. A 6.6kW system plus a 10kWh battery typically runs $15,000 to $22,000 before incentives. After the federal STC discount on panels, the Cheaper Home Batteries discount, and any state rebate, the out-of-pocket often lands between $10,000 and $15,000.
Our solar battery cost guide breaks down the battery side in more detail.
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Frequently Asked Questions
Common questions about solar panel costs
How much does one solar panel cost in Australia?
Individually, a solar panel costs roughly $200 to $400 for the panel itself. Installed as part of a full system, each panel works out to about $250 to $400 per panel for a standard 6.6kW system after the STC discount.
How much does a 6.6kW solar system cost in 2026?
Expect to pay between $4,500 and $7,000 for a good-quality 6.6kW system after the federal STC discount. Premium brands like SunPower or REC push toward the higher end. Budget systems sit lower. This is for a typical single-storey home with a simple roof.
How much do solar panels cost for a 4-bedroom house?
Most 4-bedroom homes install a 6.6kW or 8kW system. A 6.6kW system runs $4,500-$7,000. An 8kW system runs $6,000-$9,000. A family with higher usage might go up to 10kW, which costs $7,000-$10,500.
What is the cost of solar panels and a battery together?
A 6.6kW system with a 10kWh battery typically costs $15,000 to $22,000 installed, before any rebates. After federal STCs, Victorian rebates, and battery discounts, the out-of-pocket might be $10,000 to $15,000 depending on your location.
Why do solar prices vary so much between quotes?
Panel brand, inverter quality, installer reputation, roof complexity, and location all affect pricing. A cheap system might use Tier 2 panels and a string inverter. A premium system uses Tier 1 panels and microinverters. Always compare the full system specs, not just the dollar figure.
Related guides
References
^Clean Energy Regulator — Small-scale Renewable Energy Scheme
This guide is for informational purposes only. Solar pricing varies by location, installer, and system components. Always get multiple quotes before purchasing. Prices shown are estimates based on typical Australian installations in 2026.