5kw Solar Panel System Price
It’s considered an ideal size for a standard household, offering a solid balance between cost and energy output. However, with solar technology evolving rapidly and the average household energy consumption increasing especially with electric vehicles becoming more common—many are questioning if 5kW is still the sweet spot.
What Is a 5kW Solar Panel System?
- Roof Space Requirements: Each panel measures around 1.8m x 1.1m, meaning you’ll need at least 24m² of unshaded roof space. We will work with you to ensure we find the right solution for your property or space.
- Who Is It For?: This size is typically suitable for medium-sized households or small businesses that consume around 16kWh per day.
How Much Does a 5kW Solar Panel System Cost in 2025?
A 5kW solar system in Australia costs between $3,900 and $8,000 after government rebates.
- Government Subsidies and STCs
Thanks to the Small-scale Technology Certificates (STCs), which act as a federal solar rebate, the upfront cost of a 5kW system is significantly reduced. In 2025, the STC subsidy amounts to roughly $1,730, depending on your location and the installer’s approach.
- Price Factors
- Quality of Components: Higher-end panels and inverters will increase costs but offer better performance and longer warranties.
- Installation Complexity: The angle and material of your roof, accessibility, and whether additional electrical work is needed can affect the price.
- Location: Solar installation costs vary across states due to differing energy policies, rebates, and local labour costs.
How Long Before a 5kW Solar System Pays for Itself?
The payback period for a 5kW system generally ranges between 3 to 5 years, depending on your electricity usage and the cost of installation.
- Faster Payback with Higher Usage: The more solar energy you use during the day, the quicker your system will pay for itself.
- Financing Options: If you opt for solar financing, you may find yourself cash-flow positive from day one—meaning your monthly savings on electricity bills exceed your loan repayments.
The Tesla Powerwall 3’s price includes the 13.5 kWh battery with an integrated inverter, costing slightly more than the Powerall 2. The Tesla Powerwall prices include GST but do not cover delivery, installation, or additional fees. Contact us to determine the final cost of installing a PW3.
The return on investment (ROI) for Powerwall 3 depends on factors like initial costs, potential savings on utility bills, and the ability to sell excess energy back to the grid. Its high efficiency and optimization features can lead to significant energy cost savings over time, making it a worthwhile investment for homeowners looking to maximise their solar energy use.
Is a 5kW Solar System the Right Size for You?
While a 5kW system may seem like a perfect fit for the average Australian household, larger systems are becoming more popular. Many homeowners are now choosing 6kW or even 10kW systems to maximise their return on investment especially if they’re planning for future energy needs like electric vehicle charging or battery storage.
When a 5kW System Makes Sense:
- You have limited roof space.
- Your household has moderate energy consumption and no immediate plans for increasing it.
- You’re considering solar primarily to offset daytime energy use without battery storage.
When You Might Need a Larger System:
- You’re planning to add a battery in the future (5kW is the minimum, but larger systems are more effective with storage).
- You’re thinking about buying an electric vehicle or expanding your household.
- You want to maximise feed-in tariffs and increase overall energy independence.
Ready to Take the Next Step Towards Solar Savings?
If you’re considering installing a 5kW solar panel system, it’s important to understand how it fits with your current and future energy needs. At Select Electrical and Solar Solutions, we’re here to help you make an informed decision with personalised advice and expert installation.
Get in touch with us today for a no-obligation consultation and find out how much you could save with the right solar solution for your home or business.
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