Understanding the solar panel cost Brisbane homeowners are facing in 2025

When you start getting quotes for a solar PV system in Brisbane, you’ll see prices that can vary quite a bit. A typical 6.6kW system, which is a great size for most families, will generally cost between $5,200 and $7,500. More budget-friendly options might be closer to $4,500, while premium systems with top-tier panels and inverters can push towards $10,000.

So, what’s behind this price range? A few key things:

• System Size (kW) The bigger the system, the higher the initial cost, but the more electricity it will generate.
• Component Quality Reputable brands for panels and inverters cost more upfront but usually come with better performance, efficiency, and longer warranties.
• Installation Complexity Things like a two-storey house, a tile roof, or the need for a switchboard upgrade can add to the installation cost.
• The Installer The company you choose matters. A good quality installation from a reputable company is crucial for the system’s longevity and performance.

Gigi’s pro tip: Don’t just jump at the cheapest quote. A price that seems too good to be true often is. These systems might use lower-quality components that won’t last, and you could be left with a poorly performing system. It’s worth paying a bit more for reliable equipment and a trusted installer.

Average cost of a 6.6kW solar system in Brisbane

The 6.6kW system has become the go-to choice for Brisbane households for a good reason. It hits the sweet spot between affordability and energy production, making it perfect for the average family.

In 2025, you can expect the average cost of a fully installed 6.6kW solar system in Brisbane to be around $5,280. However, prices can range from about $5,000 to over $8,500 depending on the factors we’ve discussed. This price includes the panels, a 5kW inverter (which is standard for this system size), and the complete installation. A system of this size can generate about 25-28 kWh per day, which can significantly reduce, if not eliminate, your power bills.

Price of a 5kW solar system in Brisbane

For smaller households or those with lower energy needs, a 5kW system is a solid option. It provides a good amount of power while keeping the upfront cost down.

As of late 2025, the average price for a 5kW solar system in Brisbane is approximately $4,830. Prices can range from about $4,500 to $7,000. A 5kW system will generate around 19.5 kWh per day in sunny Brisbane, which is often enough to cover the daily usage of a smaller home.

Cost of a 10kW solar system in Brisbane

If you have a large family, run a home office, or have high energy consumption from things like ducted air conditioning or a pool pump, a 10kW system might be the right fit.

The cost for a 10kW system in Brisbane typically falls between $8,000 and $12,000. The average price sits at about $8,190. A 10kW system is a significant investment, but for high-energy users, the long-term savings can be substantial, with a payback period potentially as short as 3 to 6 years.

Solar rebates and incentives in Brisbane 2025

The great news for anyone considering solar in Brisbane is that there are still generous government incentives available to bring the cost down.

The main incentive is the federal Small-scale Renewable Energy Scheme (SRES). This scheme provides you with Small-scale Technology Certificates (STCs), which are sold on your behalf by your installer to reduce the upfront cost of your system. The discount is usually already applied to the prices you see advertised. For a 6.6kW system in Brisbane, this federal incentive can slash the price by around $2,000.

Watch-outs: The number of STCs you receive is based on your system size and location, and the value of these certificates decreases every year as the scheme is phased out by 2030. This means that waiting to install could result in a smaller discount.

For those considering adding a battery, the new federal Cheaper Home Batteries Program, which started in July 2025, can provide a significant rebate, potentially reducing the cost of a battery by around 30%.

Solar panel installation cost in Brisbane

It’s important to remember that the advertised price of a solar system almost always includes the cost of installation. The installation itself is a critical part of the process and should only be carried out by a qualified and accredited professional.

For a standard installation, labour costs are factored into that final price you pay. However, if your property has specific challenges, the installation cost might be higher. Additional costs could arise from:

• A multi-storey home.
• Difficult roof access.
• A tiled or terracotta roof (which requires more care).
• An old switchboard that needs upgrading to meet current safety standards.

Safety first: Always ensure your installer is accredited by Solar Accreditation Australia (SAA). This is the new standard for excellence and safety in the industry, and it’s a crucial check to make before you commit.

Solar panel prices in Queensland

The cost of solar panels across Queensland is quite competitive, thanks to a mature market and a high number of installers. Prices in Brisbane are very similar to what you’d find on the Gold Coast or Sunshine Coast. A 6.6kW system in Queensland generally ranges from $5,200 to $7,000.

The payback period for a solar system in Queensland is typically between 3 to 5 years, thanks to our sunny climate and the significant savings on electricity bills.

Ready to take the next step? For a quick, personalised estimate of solar costs and savings for your home, try the free solar assistant on this page—it gives you a ballpark in minutes. If you’re ready for a proper quote, I can introduce you to a trusted, SAA-accredited local expert—just fill out the form below.