One of the most common mistakes homeowners make is searching for the price of solar panels when what they really need is the price of a complete solar power system.
A solar installation normally includes:
- Solar panels
- Solar inverter
- Mounting system
- DC and AC electrical equipment
- Cabling
- Installation labour
- Grid connection/commissioning requirements
- Monitoring equipment or software
- Government incentives where applicable
So when comparing prices, make sure you’re comparing complete installed systems, not just the retail price of the panels.
Indicative 2026 solar system prices
| System size | Indicative installed price* |
|---|---|
| 5kW | ~$4,500–$8,000 |
| 6.6kW | ~$5,500–$9,000 |
| 10kW | ~$8,000–$13,000 |
| 13.3kW | ~$10,000–$15,000 |
| 15kW | ~$13,000–$18,000 |
| 20kW | ~$17,000–$22,000 |
*Indicative market ranges only. Actual prices vary by location, equipment, roof, installer and installation complexity. Current Australian pricing sources show substantial variation between systems.
Why are there such large price differences?
Because a $5,500 solar system and a $9,000 solar system aren’t necessarily the same product.
The difference could be:
- Better panels
- Higher-efficiency panels
- Better inverter
- More sophisticated system design
- More expensive mounting equipment
- Better warranties
- More experienced installation
- Difficult roof access
- Additional electrical work
- Optimisers or microinverters
- Higher-quality after-sales support
The cheapest quote isn’t automatically the cheapest solar system.
How Much Does a 6.6kW Solar System Cost?
A 6.6kW solar system remains one of the most common residential solar configurations in Australia.
Current 2026 market data indicates professionally installed 6–6.6kW systems using quality components generally fall around $5,500–$8,000, with broader quality-system pricing reaching around $9,000 depending on the installation.
However, don’t use $6,000 or $7,000 as a target price without looking at what’s included.
Compare these items:
System A
- 6.6kW
- Budget panels
- Budget inverter
- Standard installation
- Basic warranty
- $5,500
System B
- 6.6kW
- Higher-efficiency panels
- Better inverter
- More complex installation
- Longer warranties
- $7,500
System B costs $2,000 more.
That doesn’t automatically mean it’s overpriced.
The important question is:
What additional value are you getting for the extra $2,000?
How Much Does a 10kW Solar System Cost?
A 10kW solar system is increasingly attractive for households with higher electricity consumption.
It’s particularly worth considering if you have:
- Large air-conditioning loads
- A swimming pool
- Electric hot water
- An EV
- A large family
- High daytime electricity consumption
- Plans to add a battery
Current 2026 pricing guidance puts professionally installed 10kW systems around $8,000–$13,000, depending on equipment and installation.
But bigger isn’t always better.
If your household only uses a small amount of electricity, paying more for a large system may not produce the best return.
How Much Does Solar Cost Per kW?
Cost per kW can be useful for comparing systems, but it should not be your only measure.
For example:
$6,000 ÷ 6.6kW = ~$909/kW
But a cheaper $/kW could simply mean the system uses lower-cost equipment or has fewer installation inclusions.
Use $/kW as a comparison tool—not a buying rule.
A better comparison is:
Price + expected generation + equipment quality + warranty + installation quality
What Is Included in a Solar System Price?
When you receive a solar quote, check whether the following are included.
1. Solar panels
The panels are responsible for converting sunlight into DC electricity.
Check:
- Brand
- Model
- Wattage
- Efficiency
- Product warranty
- Performance warranty
2. Solar inverter
The inverter converts DC electricity into AC electricity that your home can use.
Check:
- Brand
- Model
- Capacity
- Warranty
- Battery compatibility
- Monitoring
3. Mounting system
This attaches the panels to your roof.
The system should be appropriate for your:
- Roof material
- Roof pitch
- Wind conditions
- Panel layout
4. Electrical installation
This may include:
- Cabling
- Protection equipment
- Switchboard work
- Isolators
- Metering requirements
- Commissioning
5. Labour
Installation labour can vary substantially depending on the property.
A simple single-storey roof is very different from:
- Two-storey installation
- Tile roof
- Metal roof
- Steep roof
- Difficult access
- Multiple roof orientations
- Long cable runs
Why Are Solar Panel Prices So Different?
There are several major factors.
1. System Size
A 10kW system naturally costs more than a 5kW system.
But larger systems can sometimes have a lower cost per installed kW because some installation costs are shared.
2. Panel Quality
Solar panels aren’t all identical.
Two panels may both be advertised as 450W but differ in:
- Efficiency
- Temperature coefficient
- Degradation rate
- Product warranty
- Construction
- Manufacturer support
Don’t compare panels purely by wattage.
3. Inverter Quality
The inverter is one of the most important components in your system.
A quote with a premium panel but a very basic inverter isn’t necessarily a premium solar system.
Compare the whole system.
4. Roof Complexity
Installation costs can increase when the installer needs to deal with:
- Multiple roof sections
- Shading
- Steep pitches
- Difficult access
- Long cable runs
- Switchboard upgrades
- Additional safety equipment
This is one reason online solar prices should be treated as estimates.
5. Location
Solar prices vary between Australian states, cities and regional areas.
For example, current Queensland pricing data is based on thousands of installed systems and allows comparison by location, system size, panel brand and inverter brand.
Regional installations can also cost more when travel, logistics and installation complexity increase.
Solar Prices After the Rebate
This is where many consumers get confused.
When you see:
“6.6kW solar system — $5,999”
you need to ask:
Is that the gross price or the price after STCs?
Eligible rooftop solar systems can receive an upfront discount through the Small-scale Renewable Energy Scheme (SRES).
Under the scheme, eligible systems can generate Small-scale Technology Certificates (STCs), which are commonly assigned to a registered agent in exchange for an upfront discount.
Your quote should ideally show:
System price before STCs
− STC benefit
= Final price
This makes comparing quotes much easier.
What Are STCs and How Do They Reduce Solar Prices?
STCs are certificates created under Australia’s Small-scale Renewable Energy Scheme.
For eligible rooftop solar systems, the number of certificates depends on factors including:
- System capacity
- Location
- Installation date
- Applicable deeming period
The certificates can reduce the upfront purchase price when assigned to a registered agent.
Important:
Don’t assume every solar product automatically qualifies.
For a system to be eligible, requirements include appropriate approved components and installation by appropriately accredited people.
How Much Should I Pay for Solar?
This is one of the most valuable questions a homeowner can ask.
There is no single correct answer.
Instead, ask:
“Is this quote competitive for the equipment and installation I’m receiving?”
For example:
A $5,000 system may be expensive if it’s poorly designed.
A $9,000 system may be good value if it includes high-quality equipment, complex installation and strong warranties.
Before deciding, compare:
| Factor | Quote A | Quote B | Quote C |
|---|---|---|---|
| System size | |||
| Panel brand | |||
| Panel model | |||
| Panel efficiency | |||
| Inverter | |||
| Annual generation | |||
| Installation | |||
| STC discount | |||
| Final price | |||
| Product warranty | |||
| Installation warranty | |||
| Battery-ready |
This turns three confusing quotes into a genuine comparison.
Cheap Solar Panels vs Premium Solar Panels
Should you pay more for premium panels?
Sometimes. Not always.
Premium panels can offer advantages such as:
- Higher efficiency
- Better performance in limited roof space
- Longer warranties
- Lower degradation
- Better aesthetics
- Advanced cell technology
But if you have a large roof with plenty of available space, paying a substantial premium for slightly higher efficiency may not provide enough additional financial benefit.
Premium panels can make more sense when:
✔ Roof space is limited
✔ You want maximum generation from available space
✔ You value longer warranties
✔ You want premium aesthetics
✔ The price premium is reasonable
Budget panels can make sense when:
✔ You have plenty of roof space
✔ Your budget is limited
✔ The manufacturer has acceptable warranties
✔ The installer has a strong reputation
✔ The overall system is well designed
Don’t Confuse Panel Price With Solar System Price
This is a critical distinction.
You may find solar panels advertised online for a few hundred dollars each.
But buying panels isn’t the same as installing a solar system.
You still need:
- Inverter
- Mounting
- Electrical protection
- Cabling
- Labour
- Engineering/design where required
- Grid connection
- Commissioning
- Compliance
The real question is:
“How much will a complete, compliant, professionally installed solar system cost me?”
That’s the number that matters.
Solar Panel Price vs Solar System Price
Solar panel only
You are paying for the physical PV modules.
Solar system
You are paying for:
Panels + inverter + mounting + electrical equipment + labour + design + installation + commissioning
That’s why comparing panel prices alone can produce a misleading picture.
How Much Does Solar Installation Cost?
Installation isn’t a fixed percentage of the solar system price.
It depends on the property.
A straightforward installation might require relatively little additional work.
A difficult installation may involve:
- Roof access equipment
- Scaffolding
- Additional electrical work
- Switchboard upgrades
- Longer cable runs
- Multiple roof orientations
- Additional labour
- Engineering
Ask your installer:
“Are there any additional installation costs that could be added after the site assessment?”
Get the answer in writing.
Does a Bigger Solar System Give Better Value?
Often, but not automatically.
Larger systems can spread some fixed costs across more solar capacity.
But there’s a more important question:
Can your household actually use the electricity the system produces?
If your system generates a lot more electricity than you consume, you may export the surplus to the grid.
And exported electricity generally earns a feed-in tariff that is lower than the retail price you pay when buying electricity from the grid.
This means system sizing should be based on your energy consumption and future needs, not simply your available roof area.
Should I Buy a 6.6kW or 10kW Solar System?
This is a common decision.
Choose 6.6kW when:
- Your electricity consumption is moderate
- Your roof space is limited
- Your budget is constrained
- You don’t expect major increases in electricity demand
Consider 10kW when:
- Your electricity consumption is high
- You have a pool
- You use lots of air conditioning
- You have electric hot water
- You own an EV
- You’re planning an EV
- You’re considering a battery
- You have sufficient roof space
Better approach:
Look at your last 12 months of electricity consumption before deciding.
The Clean Energy Regulator specifically recommends understanding current electricity use and considering future consumption when deciding what size solar system to install.
What About Solar + Battery Pricing?
If you’re comparing solar prices, don’t accidentally compare:
Solar-only system
with:
Solar + battery system
A battery can add several thousand dollars to the total project cost.
The financial case also needs to be assessed separately because battery savings depend on:
- Battery capacity
- Usable capacity
- Electricity consumption
- Solar surplus
- Electricity tariffs
- Battery cycling
- Backup requirements
2026 battery rebate changes
From 1 May 2026, the federal battery incentive became tiered according to usable battery capacity.
The first 14kWh receives the full applicable STC factor, capacity above 14kWh up to 28kWh receives a 60% factor, and capacity above 28kWh up to 50kWh receives a 15% factor. Only the first 50kWh is eligible for STCs.
That makes it particularly important to compare battery quotes carefully.
Is a More Expensive Solar System Better?
Not necessarily.
Price should reflect value.
Imagine:
Quote A — $5,500
- 6.6kW
- Budget equipment
- Basic inverter
- Standard installation
Quote B — $7,000
- 6.6kW
- Better panels
- Better inverter
- Stronger warranties
- Better monitoring
Quote C — $9,000
- 6.6kW
- Premium panels
- Premium inverter
- Complex installation
The best option depends on your priorities.
If Quote C produces only marginally more electricity than Quote B, paying another $2,000 may not make sense.
Value is about what you get for the additional money.
How to Tell If a Solar Quote Is Too Cheap
An unusually cheap quote deserves investigation.
Ask:
What’s the panel model?
Not just the brand.
What’s the inverter model?
Again, not just the brand.
Is installation included?
Are switchboard upgrades included?
Is the STC discount already applied?
What warranties are included?
Who is installing the system?
Is the installer appropriately accredited?
What annual generation is expected?
If the salesperson can’t answer these questions clearly, don’t compare the quote based on price alone.
How to Tell If a Solar Quote Is Too Expensive
A high price isn’t automatically justified by saying:
“These are premium panels.”
Ask the installer to explain the difference.
Ask:
“What specifically am I getting for the additional $2,000?”
The answer should be measurable.
For example:
- Better equipment
- More panels
- Higher generation
- Better inverter
- More complex installation
- Longer warranty
- Battery integration
- Better monitoring
- Additional electrical work
If there’s no clear explanation, get another quote.
Solar Quote Red Flags
Be cautious if a quote:
🚩 Doesn’t identify exact panel models
🚩 Doesn’t identify the inverter model
🚩 Only gives a final price
🚩 Uses phrases like “Tier 1” without specifying the product
🚩 Doesn’t explain STCs
🚩 Doesn’t provide estimated generation
🚩 Promises unrealistic savings
🚩 Pushes you to sign immediately
🚩 Doesn’t clearly explain warranties
🚩 Has an unusually low price with no explanation
How to Get the Best Solar Price
Getting the lowest possible price isn’t necessarily the goal.
The goal is:
Get the best system for your money.
Here are five ways to do that.
1. Get multiple quotes
Three quotes can reveal substantial differences in:
- Equipment
- System size
- Installation
- Price
- Warranties
Current solar price datasets show that Australian system prices vary by location, system size and equipment.
2. Compare identical system sizes
Don’t compare:
6.6kW vs 10kW
and conclude that the 6.6kW quote is cheaper.
Compare like-for-like.
3. Compare exact equipment models
“Jinko panels” isn’t enough.
You need:
Jinko [specific model]
Likewise:
Sungrow [specific inverter model]
This lets you compare actual specifications and warranties.
4. Ask for estimated annual generation
A 6.6kW system isn’t guaranteed to produce the same amount of electricity on every roof.
Ask:
“How many kWh per year do you estimate this system will generate at my address?”
Then compare generation between installers.
5. Check the installer
The Clean Energy Regulator requires installers involved in eligible SRES installations to meet accreditation and licensing requirements, and eligible systems must use approved components.
Don’t sacrifice installation quality to save a few hundred dollars.
What Should Be in a Good Solar Quote?
A professional quote should clearly identify:
System
- Total system size
- Number of panels
- Panel manufacturer
- Panel model
- Inverter manufacturer
- Inverter model
Performance
- Estimated annual generation
- System assumptions
- Roof orientation
- Shading considerations
Pricing
- Gross system price
- STC discount
- Other applicable incentives
- Final price
Installation
- Mounting
- Electrical work
- Switchboard work
- Metering
- Commissioning
Warranty
- Panel product warranty
- Panel performance warranty
- Inverter warranty
- Installation/workmanship warranty
- Battery warranty if applicable
Solar Price by Australian State
Solar prices can vary by location.
The reason includes:
- Local competition
- Labour costs
- Installer availability
- Roof types
- Transport
- Weather conditions
- Local electricity/network requirements
- System preferences
Rather than publishing one national number as if it applies everywhere, compare local installed prices.
For example, current Queensland data is based on thousands of actual installations and can be filtered by location, system size, panel brand and inverter brand.
Your local price may be different from the national average.
That’s normal.
Does Location Affect Solar Value?
Yes.
Location affects:
- Solar irradiation
- Expected annual generation
- Electricity prices
- Feed-in tariffs
- Network requirements
- Installation costs
- Available state incentives
This means a solar system that makes excellent financial sense in one Australian location may have a different payback profile somewhere else.
Solar Price vs Solar Value
This is perhaps the most important concept in this guide.
Price
What you pay today.
Value
What you receive from the system over its useful life.
A cheap system may have:
- Lower-quality components
- Shorter warranties
- Lower efficiency
- Poorer installation
- Less reliable support
A more expensive system may provide:
- Better equipment
- Better warranties
- Higher generation
- Better monitoring
- Better installation
But expensive doesn’t automatically mean better either.
Your objective should be:
Maximum long-term value—not minimum purchase price.
How Long Does Solar Take to Pay for Itself?
A simple calculation is:
Solar system price ÷ annual savings = simple payback period
But this is only a starting point.
A realistic calculation should consider:
- Electricity prices
- Solar generation
- Self-consumption
- Feed-in tariffs
- System degradation
- Inverter replacement
- Maintenance
- Battery costs
- Financing
The Clean Energy Regulator also recommends considering your electricity usage, location and budget—including payback period—when choosing a system.
Does the Cheapest Solar System Have the Best Payback?
Not necessarily.
Consider two systems:
System A
$5,500
Annual savings: $1,000
Simple payback: 5.5 years
System B
$7,000
Annual savings: $1,500
Simple payback: 4.7 years
System B costs more.
But it may pay itself back faster.
This is why you shouldn’t choose a solar system based only on the upfront price.
Should You Wait for Solar Prices to Fall?
This is difficult to predict.
Solar equipment prices can change, but so can:
- Electricity prices
- Government incentives
- Feed-in tariffs
- Labour costs
- Battery incentives
- Installer pricing
The SRES currently provides an upfront incentive for eligible rooftop solar systems, but the scheme is scheduled to conclude at the end of 2030.
Instead of trying to perfectly time the market, calculate whether the system makes financial sense for your household today.
10 Questions to Ask Before Buying Solar
Before signing a solar contract, ask:
1. What is the exact system size?
2. What exact panel model are you installing?
3. What exact inverter model are you installing?
4. How much electricity should my system generate annually?
5. What is the gross price before STCs?
6. How much is the STC discount?
7. What additional installation costs could apply?
8. What are the panel, inverter and installation warranties?
9. Who is responsible if something fails?
10. Why is this system size appropriate for my electricity consumption?
If the installer can’t provide clear answers, get another quote.
Solar Price Checklist: Before You Sign
Use this checklist:
☐ Exact panel model confirmed
☐ Exact inverter model confirmed
☐ System size confirmed
☐ Estimated annual generation provided
☐ Gross price provided
☐ STC discount shown
☐ Final price confirmed
☐ Installation inclusions confirmed
☐ Switchboard work confirmed
☐ Panel warranty checked
☐ Inverter warranty checked
☐ Installation warranty checked
☐ Installer accreditation checked
☐ Battery compatibility checked
☐ Contract reviewed
Frequently Asked Questions
How much do solar panels cost in Australia?
The price varies considerably depending on the system size, equipment and installation. Current 2026 market data puts quality professionally installed 6.6kW systems around $5,500–$9,000, while 10kW systems can be around $8,000–$13,000.
How much does a 6.6kW solar system cost?
Around $5,500–$8,000 is a current market range for professionally installed quality systems, although prices can reach around $9,000 depending on equipment and installation.
How much does a 10kW solar system cost?
A quality 10kW residential installation can commonly fall around $8,000–$13,000 in current 2026 pricing guidance.
Does the solar price include the rebate?
Many advertised prices already deduct the applicable STC benefit. Always ask for the gross price, STC discount and final price separately.
What are STCs?
Small-scale Technology Certificates are created under Australia’s Small-scale Renewable Energy Scheme and can provide an upfront discount for eligible systems.
Are solar rebates still available in 2026?
Yes. Eligible rooftop solar systems can still receive support under the SRES.
Is a $5,000 solar system a good deal?
It depends on the system. Compare the exact panels, inverter, installation, warranties, estimated generation and STC discount before deciding.
Is it worth paying more for premium solar panels?
Sometimes. Premium panels can make more sense when roof space is limited or you value higher efficiency, warranties and long-term performance. But the price premium should be justified by measurable benefits.
Should I buy the cheapest solar quote?
No. Aim for the best combination of price, equipment, installation quality, warranty and expected energy production.
Should I get a battery at the same time?
Not necessarily. Compare solar-only and solar-plus-battery economics separately. The 2026 battery incentive also uses a tiered STC structure based on usable capacity.
Final Verdict: How Much Should You Spend on Solar?
There is no magic number that makes a solar system a good deal.
A $5,000 system can be expensive.
A $9,000 system can be excellent value.
It all depends on what you’re getting.
The smartest way to buy solar is to compare:
System size
- Annual generation
- Panel quality
- Inverter quality
- Installation
- Warranty
- STC discount
- Final price
- Expected savings
rather than simply asking:
“Who has the cheapest solar panels?”
Your goal should be to find the best-value solar system for your home, not simply the lowest advertised price.
Get 3 Free Solar Authority Quotes and Compare Your Real Solar Cost
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We’ll help you compare:
✔ System size
✔ Panel brands and models
✔ Inverter options
✔ Estimated generation
✔ STC discounts
✔ Installation costs
✔ Warranties
✔ Battery options
✔ Overall value
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