Solar Panel Cost Australia
Solar panel costs in Australia vary depending on your system size, roof, location, equipment, installer and available incentives. This guide explains what affects the final price, how rebates can reduce upfront costs and how to estimate whether solar may be worth it for your home.
Estimate my solar costHow much do solar panels cost in Australia?
As a general guide, a residential solar panel system in Australia can cost several thousand dollars upfront. The final price depends on the size of the system, the quality of the panels and inverter, the complexity of the roof, installation labour, electrical work and any available solar incentives.
Smaller solar systems generally cost less upfront, while larger systems cost more but may generate more electricity over time. A simple single-storey roof with good sun exposure is usually cheaper to install on than a steep, shaded, multi-storey or complex roof.
Many residential solar quotes already include available incentives as an upfront discount. This means the price shown in a quote may already be reduced before you compare it with other options.
The prices on this page are broad indicative estimates only. Actual solar quotes may be higher or lower depending on your home, electricity usage, roof, installer, location and current incentive eligibility.
Solar system cost by size
System size is one of the biggest factors affecting solar cost. The right size depends on your electricity usage, roof space, budget and whether you want to prepare for future changes such as a battery, electric vehicle or higher daytime usage.
| System size | Typical use case | Indicative installed cost |
|---|---|---|
| 5kW | Smaller homes, lower usage or limited roof space | $4,500 – $8,000 |
| 6.6kW | Popular size for many Australian homes | $5,500 – $9,000 |
| 10kW | Larger homes, higher usage or future battery plans | $8,000 – $13,000 |
| 13kW+ | High usage homes, larger roofs or electric vehicle plans | $10,000+ |
A larger system is not automatically better. The best system size depends on how much electricity you use, when you use it and how much suitable roof space is available.
Solar panel costs by state
Solar costs can vary across Australia because of installer competition, freight, roof types, labour costs, state incentives and local electricity prices. The table below gives a general comparison of what may affect pricing in each state or territory.
| State or territory | What may affect solar cost | What to check |
|---|---|---|
| NSW | Large market, strong installer competition and varied roof types | Compare system design, feed-in tariffs and retailer plans |
| VIC | State programs, colder winters and household usage patterns | Check current Victorian solar and battery support options |
| QLD | High sunshine, strong solar uptake and air-conditioning demand | Consider daytime usage and summer electricity demand |
| WA | High rooftop solar uptake and network/export rules | Check export limits, retailer plans and battery suitability |
| SA | High solar uptake and battery interest | Compare solar-only, battery-ready and solar-plus-battery options |
| TAS | Different climate, electricity usage and heating patterns | Check winter usage and expected generation across the year |
| ACT | Government programs and energy efficiency interest | Check current rebate, loan and electrification programs |
| NT | Remote conditions, high sun exposure and possible freight costs | Check installer availability, heat performance and local rules |
Solar cost before and after incentives
The advertised price of a residential solar system is often shown after incentives have already been applied. This is why two quotes can look very different even when the system size appears similar.
In Australia, eligible solar systems may receive support through the Small-scale Renewable Energy Scheme. The value of small-scale technology certificates is commonly assigned to a registered agent in exchange for an upfront discount or delayed cash payment.
| Cost stage | What it means | Why it matters |
|---|---|---|
| Pre-incentive cost | The estimated system price before eligible incentives are applied | Useful for understanding the underlying system value |
| Incentive discount | The estimated value of available certificates, rebates or support | Can reduce the upfront amount you pay |
| Out-of-pocket cost | The amount you are quoted after discounts and incentives | This is usually the number most homeowners compare |
Incentives and eligibility can change. Always check your quote and current government information before relying on rebate estimates.
Why solar incentives reduce over time
Australia’s Small-scale Renewable Energy Scheme uses a deeming period to estimate how many years a solar system will generate renewable energy. The deeming period decreases each year until the scheme ends in 2030, which reduces the number of small-scale technology certificates a new system can create.
STC deeming period by installation year
The deeming period falls by one year each year until 2030.
Source: Clean Energy Regulator deeming period table.
Estimated 2026 STCs for a 6.6kW system
STC creation depends on system size, installation year and postcode solar zone. This example uses a 6.6kW system installed in 2026.
Calculation: 6.6kW × 2026 deeming period × CER postcode zone rating, rounded down.
Projected solar PV STC creations, 2026–2030
Clean Energy Regulator projections show annual solar PV STC creations declining toward 2030 as the deeming period reduces.
Source: Clean Energy Regulator / ACIL Allen small-scale technology certificate projections, base case.
What affects solar installation cost?
- System size: larger systems usually cost more upfront but may produce more electricity.
- Panel quality: premium panels may cost more but can offer better warranties or performance.
- Inverter type: string inverters, microinverters and hybrid inverters have different price points.
- Roof type: tile, metal, steep, shaded or multi-storey roofs can change labour costs.
- Switchboard work: some homes need upgrades before solar can be safely installed.
- Location: installer availability, freight, local rules and competition can affect pricing.
- Battery readiness: designing for a future battery may change inverter and system choices.
Why your roof matters
Your roof affects both the cost and performance of a solar system. A large, simple roof with strong sun exposure is usually easier to design and install on than a roof with shading, limited space or multiple small sections.
Roof orientation also matters. North-facing roof areas are often strong performers in Australia, but east and west-facing panels may still be useful depending on when your household uses electricity.
If your roof has limited usable area, you may need a smaller system or higher-efficiency panels to make better use of the available space.
How rebates affect upfront cost
Eligible rooftop solar systems may receive an upfront reduction through small-scale technology certificates. In many cases, the installer handles this process and applies the value as a discount in the quote.
State or territory rebates, loans or battery incentives may also be available at different times. These programs can change, so it is worth checking official government information before comparing quotes.
Does a cheaper quote save money?
Not always. A cheap solar quote may look attractive upfront, but poor equipment, rushed installation or weak after-sales support can cost more over time.
When comparing quotes, look at the panel brand, inverter brand, warranties, installer reputation, system design, estimated annual generation and after-sales support — not just the lowest price.
How much does solar cost with a battery?
Adding a battery can significantly increase the upfront cost of a solar setup. A solar-only system is usually cheaper than a solar-plus-battery system, but a battery may help some households store excess solar energy for use at night or during peak pricing periods.
A battery does not automatically make financial sense for every home. The value depends on your usage pattern, electricity plan, battery size, backup needs, feed-in tariff, available incentives and how much excess solar you produce during the day.
| Setup type | Best suited to | Cost impact |
|---|---|---|
| Solar only | Homes wanting lower upfront cost and daytime savings | Lowest upfront cost |
| Battery-ready solar | Homes planning to add a battery later | May cost more depending on inverter choice |
| Solar + battery | Homes wanting more evening use, backup options or lower grid reliance | Highest upfront cost |
Solar payback period in Australia
The solar payback period is the estimated time it takes for electricity bill savings to recover the upfront cost of the system. For example, if a system costs $7,000 and saves around $1,400 per year, the simple payback period would be around five years.
Payback depends on how much solar electricity you use directly in the home, how much you export to the grid, your electricity rates, feed-in tariff, system size and installation cost.
Homes with higher daytime electricity use may see stronger savings because they can use more of their solar power directly instead of exporting it. Homes that use most electricity at night may have a longer payback period unless a battery or usage changes improve self-consumption.
Example solar cost scenarios
These simplified examples show how different households may need different system sizes. They are not quotes, but they show why the right solar system depends on your usage and roof.
| Example home | Monthly bill | Possible system size | What to consider |
|---|---|---|---|
| Small household | $120 – $180 | 5kW | Lower usage, smaller roof, focus on daytime self-consumption |
| Average family home | $180 – $280 | 6.6kW | Common system size, good balance of cost and generation |
| Larger household | $280 – $450 | 10kW | Higher usage, possible battery or electric vehicle planning |
| High usage home | $450+ | 13kW+ | Large roof needed, export limits and battery options may matter |
How to compare solar quotes
Comparing solar quotes is not only about choosing the cheapest option. Two systems can have the same size on paper but very different equipment, warranties, design quality and expected performance.
Estimate your solar cost
Use our free solar calculator to estimate your system size, installation cost, potential savings and payback period based on your address and electricity bill.
Solar panel cost FAQs
What is the average cost of solar panels in Australia?
The average cost depends on system size, equipment, roof type, installer and location. Many residential systems cost several thousand dollars after available incentives, with larger systems costing more upfront.
How much does a 6.6kW solar system cost?
A 6.6kW solar system is a common choice for Australian homes. As a broad guide, it may cost somewhere around $5,500 to $9,000 depending on equipment, roof complexity, installer and location.
How much does a 10kW solar system cost?
A 10kW solar system may suit larger homes, higher electricity usage or future battery plans. As a broad guide, it may cost around $8,000 to $13,000 depending on the installation.
Is solar worth it in Australia?
Solar can be worthwhile for many Australian homes, especially where daytime electricity use is high and the roof has good sun exposure. The best way to estimate value is to compare system cost against expected yearly savings and payback period.
Do solar rebates reduce the price?
Yes, eligible systems may receive an upfront reduction through small-scale technology certificates. Some state or territory programs may also offer rebates or loans, depending on current availability and eligibility.
Does roof direction affect solar value?
Yes. Roof direction, shade, pitch and available space can all affect solar generation. North-facing panels are often strong performers in Australia, but east and west-facing panels may also be useful depending on when your household uses power.
Should I get a battery with solar?
A battery may suit some homes, especially where evening usage is high or backup power is important. However, batteries increase upfront cost, so it is worth comparing solar-only, battery-ready and solar-plus-battery options.
Sources and further reading
For official information about solar incentives, consumer guidance and renewable energy programs in Australia, visit:
- Australian Government Solar Consumer Guide
- Clean Energy Regulator: Calculate small-scale technology certificate entitlements
- Clean Energy Regulator: Postcode zone ratings and zones for solar panel systems
- Clean Energy Regulator: Small-scale Technology Certificate Projections
- Energy.gov.au: Government rebates and loans for solar
- Energy.gov.au: Solar feed-in tariffs
- Clean Energy Council consumer information