01No obligation
Free quote & assessment
Tell us your address and your latest bill. We design a system to your roof, your usage and your budget, with no pushy sales visit.
15kW system
15kW is where residential ends and commercial thinking begins.
The largest system we fit under a residential design. Past this point the right approach is a commercial assessment based on your load profile rather than your roof.
- 34 × 440W panels
- 15kW inverter
- ≈ 68 m²
What a 15kW system looks like
Small commercial sites, large rural properties and homes with exceptional consumption. At this scale self-consumption during working hours is what makes the return, which is why it is often a business rather than a household.
Panels
34 × 440W
Inverter
15kW
Roof space
≈ 68 m²
Best for
Small business premises and very large homes
- Three-phase supply required, with a full distributor application
- If this is for a business, our commercial assessment models it properly
- Needs substantial unshaded roof, often across several planes
Compare the range
Every size, side by side.
Panel counts and roof space are arithmetic from 440W modules. Which one is right for you comes from your bill, not this table.
- 5kW12 panels · ≈ 24 m²
Units, townhouses and smaller households
- 6.6kW15 panels · ≈ 30 m²
The typical three to four person household
- 10.4kW23 panels · ≈ 46 m²
Larger homes, pools, ducted systems and EVs
- 13.2kW30 panels · ≈ 60 m²
High-consumption homes and small premises
- 15kWYou are here34 panels · ≈ 68 m²
Small business premises and very large homes
Brands we install
How it works
From first quote to switch-on.
01Fixed pricing02
Custom system design
You get a clear proposal: panels, battery, inverter, real savings, payback and every rebate you qualify for, itemised.
Usually one day03
Accredited installation
Our SAA-accredited installers install to standard, tidy and on time, in Melbourne, Sydney and the surrounding regions.
Warranties registered04
Switch on & save
We handle the paperwork, grid connection and rebates. You watch your bill drop from day one, with every manufacturer warranty registered in your name.
Proof
Loved by Australian homes and businesses.
5.0Rated on Google Reviews“My solar battery and panel install wasn’t an easy job but the team were very friendly and consulted me on the little things as they went. The finished job looked great and is operating well.”
Dean H.
Google review · 3 months ago
“They turned up in time, very professional, friendly, but most importantly very neat and clean with their work. After completing the work they spent the time with me explaining how the system works.”
Stelios K.
Google review · 5 months ago
“Had solar and a battery installed by Lumenx fantastic experience. Smooth process, great communication, and high-quality work.”
Mustafa M.
Google review · 6 months ago
“Their knowledgeable team provided clear explanations, and the installation was efficient and professional.”
Claudette T.
Google review · 2 years ago
“Team was exceptional with delivering high quality service for my two builds. The service was top tier alongside their communication.”
Nuredin M.
Google review · 2 years ago
“Great crew, great team fantastic to work with !”
Johnny B.
Google review · 10 months ago
“Lumenx exceeded their expectations with delivering highly great service. Definitely recommend for all your solar needs.”
Suliman S.
Google review · 2 years ago
“Extremely happy with the boys install of our batteries”
Ricky H.
Google review · 2 weeks ago
“My solar battery and panel install wasn’t an easy job but the team were very friendly and consulted me on the little things as they went. The finished job looked great and is operating well.”
Dean H.
Google review · 3 months ago
“They turned up in time, very professional, friendly, but most importantly very neat and clean with their work. After completing the work they spent the time with me explaining how the system works.”
Stelios K.
Google review · 5 months ago
“Had solar and a battery installed by Lumenx fantastic experience. Smooth process, great communication, and high-quality work.”
Mustafa M.
Google review · 6 months ago
“Their knowledgeable team provided clear explanations, and the installation was efficient and professional.”
Claudette T.
Google review · 2 years ago
“Team was exceptional with delivering high quality service for my two builds. The service was top tier alongside their communication.”
Nuredin M.
Google review · 2 years ago
“Great crew, great team fantastic to work with !”
Johnny B.
Google review · 10 months ago
“Lumenx exceeded their expectations with delivering highly great service. Definitely recommend for all your solar needs.”
Suliman S.
Google review · 2 years ago
“Extremely happy with the boys install of our batteries”
Ricky H.
Google review · 2 weeks ago
FAQ
System sizing, answered.
Send us a recent bill and we will tell you which of these is actually right for you.
Get a Free QuoteIt depends on your daily consumption and when it happens. A household using around 20kWh a day with most of it in daylight is usually well served by 6.6kW; heavy air conditioning, a pool or an EV typically pushes that to 10kW or more. We size it from your actual bill rather than guessing.
Roughly 2 square metres per panel, so a 6.6kW system with 15 panels needs about 30m² of usable roof, and a 15kW system about 68m². Usable means unshaded, structurally sound and on an orientation worth installing to.
You can, but it is rarely the cheaper path. Adding to an existing array often means a second inverter or a replacement, plus a second lot of installation and paperwork. If you expect your usage to grow, it is usually better to size for that now.
No. Beyond your actual consumption the extra generation is exported at a low feed-in rate, so the marginal return drops sharply. We will tell you when a smaller system is the better financial decision.
Tier-1 440W modules across the range, from Jinko Solar, Longi, Risen, Sunman and Boss Solar depending on availability and what suits your roof. The specific model is named in your quote, not left vague.
Get started
Ready for a lower power bill?
Send us your address and a recent bill. Here is exactly what comes back.
- A fixed, itemised price, not a range
- Every rebate you qualify for, applied for you
- A design built on your roof and your real usage
- No pushy sales visit, ever
