Buy A 6.6kW System From The Best Solar Installers

Save On Your Power Bills

A 6.6kW solar system can generate enough electricity to cover a significant portion of your daily energy use, reducing your reliance on the grid and helping you cut your power bills by hundreds or even thousands of dollars each year.

Quality and Hassle-Free Solar Installation

We make the process simple. From personalised advice to professional installation by accredited solar experts, we handle everything so you can enjoy reliable solar power without the headaches.

Premium Products, Expert Advice

We only work with trusted, top-tier brands for panels and inverters, backed by industry-leading warranties. Plus, our team takes the time to ensure your system is tailored to your home, your energy needs, and your budget.

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Based on 1.000+ Reviews

Choose the Right Solar System Size For Your Home

Small Systems

Best for: Energy-conscious households, singles or couples working during the day

Average daily output: ~18–28 kWh/day

Roof space needed: ~20–35 m²

Estimated annual savings: $1,000 – $1,500+

5kW system

6.6kW system

7kW system

Medium Systems

Best for: Families with moderate to high energy use (e.g. WFH, EV charging)

Average daily output: ~30–44 kWh/day

Roof space needed: ~35–50 m²

Estimated annual savings: $1,600 – $2,200+

Large Systems

Best for: Large households, multiple appliances, EVs, or battery storage integration

Average daily output: 45+ kWh/day

Roof space needed: 55+ m²

Estimated annual savings: $2,800 – $7,000+

Not sure which one is right for you? Speak with our team today

Why Choose a 6.6kW System for Your Home:

The Perfect Fit for Most Aussie Households

A 6.6kW solar system is the sweet spot for average energy usage. It’s large enough to make a big dent in your electricity bills without overcapitalising. Ideal for families or homes with working professionals and appliances running throughout the day.

Great Value for Money

A 6.6kW system delivers strong output without the higher upfront cost of oversized systems. It strikes the right balance between affordability and performance, making it one of the most cost-effective choices for residential solar.

Future-Proof Your Energy Needs

Thinking about getting an EV, battery storage or growing your household? A 6.6kW system gives you room to expand and ensures your solar setup continues to work hard for you as your needs change.

Ask one of our solar experts about a 6.6kW system

The Solar + Battery Advantage

Why Solar Alone Is No Longer Enough

Gone are the days when people installed just solar panels. More and more Australians are now pairing their solar system with a battery and for good reason:

Double the Rebates, Double the Savings
By installing both solar and a battery, you can access multiple rebates, stacking the federal solar rebate with the battery rebate to slash your upfront costs.
Feed-in Tariffs Are Dropping
The money you get for sending excess solar back to the grid keeps going down. In some areas, you're even charged to export power. A battery lets you store and use that energy instead.
Unstable Grid? No Worries.
With blackouts becoming more common, having a battery means you can keep the lights on when the grid goes down. Stay powered up and in control, no matter what.

Learn more about battery storage

Customer Stories

"Having solar is the most sensible thing you can do to save money."

Robert, 1KOMMA5° Customer

Here's everything you need to know about installing a 6.6kW solar system:

Is a 6.6kW solar system the right size for my home?

A 6.6kW system is a great fit for most medium-sized Australian homes, especially households with 2–5 people. If you work from home or use more power during the day, it’s an ideal choice.

How much can I save with a 6.6kW solar system?

Depending on your energy usage, feed-in tariff, and how much solar energy you consume, you could save between $1,200 and $2,000 per year. Households that use more power during the day typically see higher savings.

How much roof space do I need for a 6.6kW system?

You’ll need around 30–40 square metres of roof space, depending on the panel type and layout. North-facing roofs produce the most energy overall, but west-facing panels are great for capturing afternoon sun, perfect if your household uses more power later in the day. Your installer will design a layout that maximises generation based on your roof orientation and usage habits.

Can I add batteries to my 6.6kW solar system later?

Yes, a 6.6kW system is compatible with battery storage and can easily be upgraded down the track. Some households start with solar only and add a battery when it suits their budget or energy needs. It’s a smart way to future-proof your system.

Are there rebates or incentives for installing a 6.6kW solar system?

Yes, eligible homeowners can access federal STC rebates, which can reduce the cost by thousands. Some states also offer additional rebates or no-interest loans. These incentives make 6.6kW one of the most cost-effective system sizes to install.

How much does it cost to install a 6.6kW solar system?

The price typically starts from $7,900. Fepending on the quality and brand of panels and inverter, the cost could go up. Premium systems with longer warranties may cost more upfront but offer better long-term value. Be sure to compare quotes and ask about hidden fees or exclusions.

What warranties are available with a 6.6kW solar system?

At 1KOMMA5°, we only offer premium solar panels and inverters from trusted, high-performance brands known for their reliability. Our own 1KOMMA5° solar panels come with an industry-leading 30-year product warranty, and our 1KOMMA5° hybrid inverter is backed by a 12-year product warranty for your peace of mind.

We also carry other reputable panel brands, most of which include a 25-year product warranty on panels and a 10-year product warranty on inverters.

To give you even more confidence in your investment, every 1KOMMA5° system comes with a 30-year workmanship guarantee so you’re covered not just for the products, but also for the quality of the installation.

A Smart Future Investment

Premium Solar Panels to Maximise Your 6.6kW Solar System

The quality of your solar panels is key to how much energy and savings you get from your system. At 1KOMMA5°, we only install trusted, high-performance panels that deliver long-lasting results for your 6.6kW solar system.

1KOMMA5° Solar Panel Other Solar Panels

Reliability Combined With Efficiency

The Heart of Your 6.6kW Solar System

Your inverter is what brings your 6.6kW solar system to life. It converts the energy collected by your panels into usable power for your home. A high-quality inverter means greater energy output, fewer disruptions, and reliable system performance, helping you maximise your solar investment.

1KOMMA5° Hybrid Inverter Other Solar Inverters

You may be eligible for government solar rebates. Check if you qualify.

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Testimonials

Join the 1KOMMA5° movement

Take the lead in climate protection - hear from our customers on how they are making a difference.

Your next steps towards a climate-neutral life:

Step 1: Request a quote online.

After you send your request, one of our expert team members will give you a call.

Request a quote

Step 2: We give you personalised advice and recommendations.

Our energy advisors will create a tailored solution based on your needs. We will explain everything and answer your questions on solar rebates, solar installation costs and process, energy management and more.

Step 3: We install your solar power system.

Once you've signed off on your quote and made a deposit, we will arrange an installation date that works with your schedule.

Step 4: We stay as your energy partner.

Whether you have questions about energy, warranty issues or service or you're looking to expand to other energy efficient solutions, you can reach out to us at any time.

Partners & Accreditations

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