Buy A 5kW System From The Best Solar Installers

Save On Your Power Bills

A 5kW 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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4.6

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 5kW System for Your Home:

Ideal for Small to Medium Households

A 5kW solar system suits homes with 2 to 4 people, helping cover a significant portion of your daily energy needs without overcapitalising.

Great Balance of Cost and Savings

A 5kW system offers excellent value, affordable to install, eligible for government rebates, and capable of saving you up to $1,800 a year on electricity bills.

Future-Ready, with Room to Grow

Many 5kW systems can be paired with a battery or expanded later if your energy needs increase, making it a flexible, long-term energy solution.

Learn How Much You Can Save With a 5kW 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 5kW solar system:

Is a 5kW solar system the right size for my home?

A 5kW solar system is a popular choice for small households, typically with 2 to 4 people. It can generate around 18 to 22kWh of electricity per day, depending on factors like your location, roof orientation, and weather.

How much can I save with a 5kW solar system?

Savings depend on how much solar energy you use during the day and current electricity rates. On average, many households with a 5kW system save between $1,200 to $1,800 per year on power bills.

How much roof space do I need for a 5kW system?

A typical 5kW solar system requires around 25 to 35 square metres of roof space, depending on your roof layout and panel choice. Most panels these days are between 450 to 460 watts, which means you’ll need approximately 11 to 12 panels to make up a 5kW system.

Can I add batteries to my 5kW solar system later?

Yes, absolutely. Many of our customers start with a 5kW solar system and choose to add battery storage down the track. If you’re considering this, we can install a battery-ready inverter to make adding storage simple in the future.

Are there rebates or incentives for installing a 5kW solar system?

Yes, most homeowners are eligible for federal government solar rebates that reduce the upfront cost of a solar system. For a 5kW solar system, the solar rebate is approximately $1,600.

How much does it cost to install a 5kW solar system?

The cost of a 5kW solar system can vary based on the panels, inverter brand, roof type, and any extras like monitoring or battery-readiness. As a general guide, pricing typically starts from $6,000.

What warranties are available with a 5kW 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 5kW 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 5kW solar system.

1KOMMA5° Solar Panel Other Solar Panels

Reliability Combined With Efficiency

The Heart of Your 5kW Solar System

Your inverter is what brings your 5kW 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.

Get in touch now

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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