A 6.6kW solar system with a 5kW inverter is one of the most common starting points for Victorian homes. It can suit households that use a decent amount of power during the day and want a straightforward solar system without turning the quote process into a hostage negotiation.
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System: 6.6kW Jinko solar panels with a 5kW GoodWe inverter.
Average annual savings estimate: $1,000.
Total system price: $7,500 inc GST before rebate and loan deductions.
STC rebate claimed by AES in 2026: $1,404.
Includes Solar Victoria rebate: $1,400.
Includes Solar Victoria interest-free loan: $1,400.
Based on standard install conditions and eligibility.
6.6kW Solar System
Starting From
$3,296
inc GST, fully installed*
Estimated annual savings: $1,000
Starting price note: The listed price is based on standard installation conditions, Solar Victoria eligibility, STC rebate assumptions and a property that meets the required roof, switchboard and access conditions.
6.6kW Solar Cost: Why This Popular System Size Still Confuses Everyone
The 6.6kw solar system with 5kw inverter price is one of the most common things Victorian homeowners search for when they start comparing solar. It makes sense. A 6.6kW system is a popular household size, and many people want to know the real 6.6kw solar system price Melbourne installers are charging before they book a quote.
The honest answer is that the 6.6kw solar system cost depends on the products, roof, switchboard, rebate eligibility and installation conditions. Annoying, yes. But less annoying than pretending every house in Melbourne is the same rectangle with perfect access and a polite switchboard.
Advanced Energy Solutions provides practical energy solutions for Victorian homes, with system designs based on your property and usage rather than whatever number looks best in an ad.
Who Should Consider a 6.6kW Solar System?
1
Average Households
For homes with standard electricity usage that want a practical residential solar starting point.
2
Daytime Power Users
For homes using appliances, working from home, heating, cooling or pool pumps during the day.
3
Solar-Only Buyers
For homeowners wanting a strong solar-only setup before comparing batteries or larger systems.
4
Price Comparers
For homeowners trying to understand what affects the final price before booking a quote.
What Is a 6.6kW Solar System?
A 6.6kW solar system is commonly paired with a 5kW inverter. This setup is popular because it can suit many average households, especially homes that use electricity during the day for appliances, working from home, heating, cooling, pool pumps or general household loads.
Commonly paired with a 5kW inverter.
Can suit many average Australian households.
Works best when more electricity is used during the day.
Can be installed as solar-only or as part of a solar and battery design.
A practical size before moving into larger, more expensive systems.
6.6kW Solar Installations by AES
A look at 5kW, 6kW and similar residential solar systems and inverter installations completed by Advanced Energy Solutions across Melbourne, regional Victoria and surrounding areas.
6kW Solar Regional Victoria6kW Solar AlfredtonFronius 5kW InverterResidential Solar Installation5kW Sungrow Inverter5kW Solar Footscray5kW GoodWe Inverter6kW Solar Tullamarine
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What Can Affect the Final Price?
The final 6.6kw solar system cost is usually shaped by the details of the site. A straightforward install is one thing. A steep, double-storey, tiled roof with limited switchboard space is another thing entirely. Naturally, because buildings enjoy being difficult.
Multi-storey installationExtra labour and safety equipment required.+$1,000 – $3,000
Switchboard upgradeOlder homes may need upgrades to meet standards.+$800 – $1,500
Long cable runsWhen inverter is far from the switchboard.+$200 – $500
Multi roof facesWhen the solar panels are split over multiple sections.+$250 per split roof
Roof type (Tile)Some materials, such as terracotta, need extra care.+$400 – $800
Steep roof installation (30°+)Additional safety equipment and labour required for steep pitch roofs.+$500 – $1,500
Regional / difficult accessTravel or access challenges for properties outside metro areas.+$500 – $1,000
💡 Final costs are always confirmed after a site inspection with transparent pricing and no surprises.
Is a 6.6kW System Big Enough?
For many households, yes. A 6.6kW system can cover a strong portion of daytime electricity usage, especially if you can shift appliances, heating, cooling or other loads into daylight hours.
Daytime usage: Appliances, heating, cooling or work-from-home loads can make solar-only more useful.
Average households: A 6.6kW system can suit many standard residential homes.
Night usage: It may not fully remove your bill if most power is used after sunset.
Higher loads: EVs, pools, large heating and cooling loads or future battery plans may need a bigger comparison.
What Else to Compare Before Choosing 6.6kW Solar
It is also often a practical size for standard residential solar because it gives you a solid amount of generation without automatically jumping into a larger, more expensive system. If you are still comparing sizes, our solar system cost Melbourne page gives a broader breakdown of current solar pricing, battery pricing, rebate assumptions and common extras.
Common Price Factors
Common price factors include roof material and roof pitch, single-storey or multi-storey installation, switchboard condition, panel layout across one or more roof faces, single phase or three phase power, distance between inverter and switchboard, and Solar Victoria eligibility.
If you are unsure how rebates affect the price, the Solar Victoria page is the next place to go.
When a Larger System May Make Sense
If your home has heavier usage, an EV, large heating and cooling loads, a pool, or you are planning a battery, you may want to compare this system size against our 13kw solar system with 10kw inverter price page.
Should You Add a Battery?
A 6.6kW system can be installed as solar-only, or it can form part of a solar and battery design. A battery may help if you use more power at night or want to store more of your own solar instead of exporting it for a low feed-in tariff.
If battery storage is on your radar, read our battery quotes page before choosing a system.
Get a Better 6.6kW Solar Quote
Advanced Energy Solutions provides practical energy solutions for Victorian homes, with system designs based on your property and usage rather than whatever number looks best in an ad.
Use our instant solar quote tool for a fast starting estimate, or book a detailed consultation if you want a tailored quote with clear pricing, realistic assumptions and proper system recommendations.
6.6kW Solar Cost FAQs
How much does a 6.6kW solar system cost?
Our current 2026 starting price for a 6.6kW solar system with a 5kW inverter is from $3,296 inc GST, fully installed, based on the listed standard installation assumptions, rebates and loan deductions.
What is included in the 6.6kW starting price?
The starting price allows for Jinko Solar Panels, a GoodWe Inverter, a single-storey Colorbond roof under 27 degrees, single phase power, spare switchboard space, a maximum of two roof faces and the listed rebate assumptions.
Why can the final 6.6kW solar price change?
Your final price can change if your property needs extra work, such as a switchboard upgrade, multi-storey access, tile roof work, long cable runs, three phase equipment or steep roof safety measures.
Is a 6.6kW solar system big enough?
For many households, yes. A 6.6kW system can cover a strong portion of daytime electricity usage, especially if you can shift appliances, heating, cooling or other loads into daylight hours.
Should I compare 6.6kW solar with a 13kW system?
If your home has heavier usage, an EV, large heating and cooling loads, a pool, or you are planning a battery, you may want to compare this system size against our 10kW solar system cost guide.
Should I add battery storage to a 6.6kW solar system?
A battery may help if you use more power at night or want to store more of your own solar instead of exporting it for a low feed-in tariff. Our battery quote page explains what to consider before choosing a solar and battery system.
How do Solar Victoria rebates affect the price?
Solar Victoria rebates and loan options can make a big difference, but eligibility matters. Read our Solar Victoria guide before assuming a rebate applies.
How do I get a 6.6kW solar quote?
Use the instant solar quote tool for a fast starting estimate, or book a detailed consultation if you want a tailored quote with clear pricing, realistic assumptions and proper system recommendations.
Get a Better 6.6kW Solar Quote
Advanced Energy Solutions provides practical energy solutions for Victorian homes, with system designs based on your property and usage rather than whatever number looks best in an ad.
Use our instant solar quote tool for a fast starting estimate, or book a detailed consultation if you want a tailored quote with clear pricing, realistic assumptions and proper system recommendations.
Trustindex verifies that the original source of the review is Google.
Jim came around for an inspection very quickly, and I appreciated how thorough and knowledgeable he was. He took the time to assess our specific solar needs and provided honest, practical recommendations. I highly recommend for anyone considering solar.
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Greg Hooke
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From the moment Jim came to our house in Box Hill to discuss our solar needs/heat pump situation to the final thank you handshake, we were both so impressed by his professional attitude, passion and ability to explain succinctly what we were about to enter into and how we would benefit. We could not be happier with the final outcome and everything was done so well, including clean up, removal and all the official paperwork. Nothing was ever a bother and Jim answered every question with a smile. Overall, great quality workmanship. Thanks Jim and co.
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Brodie Doolan
Trustindex verifies that the original source of the review is Google.
Jim and his amazing offsider Installed a 5kW system on our house back in 2022 which has not missed a beat, we have not had to pay an electricity bill since installing which is amazing for a family of 5.
Jim also performed some other electrical and CCTV installations at our house and has always been a professional outfit to deal with.
Would highly recommend
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Sam Tait
Trustindex verifies that the original source of the review is Google.
Fantastic communication and service from start to finish. Honest, efficient, and excellent work. Everything was easy, smooth and seemingly effortless. Highly recommend!!
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Sara Tosh
Trustindex verifies that the original source of the review is Google.
Very rarely leave reviews, however - the guys at advanced energy solutions installed solar panels for me and I was incredibly impressed throughout the entire process. The efficiency and professionalism of Jim and Ryan was outstanding.
Their trustworthy nature was very reassuring and they kept me very informed during the entire installation. The team were so helpful and knowledgeable when answering all (and a lot of!) my questions. Super fast installation and I'm delighted with the results!
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Daniel Gale
Trustindex verifies that the original source of the review is Google.
Ryan from Advanced Energy Solutions took the time and offered numerous solar solutions to my enquiry. He answered all of my naive questions in layman’s terms and was very easy to talk to. He always called when he said he would and offered a very competitive system.
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Sarah S
Trustindex verifies that the original source of the review is Google.
Jim gave me really good advice and explained very clearly how much money I will be saving, and did a neat install. Thanks again!
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Matthew Powell
Trustindex verifies that the original source of the review is Google.
Very great quality workmanship on these solar panels , great job !! Have exceeded expectations
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Jemma Keeves
Trustindex verifies that the original source of the review is Google.
The team at Mason Solar made the whole process of installing our solar panels very smooth from understanding the best solar for us, the rebate system and how to optimise the solar to get the most out of it. Clear communication and professional service. Would highly recommend!
