
Choosing the right solar system size can feel confusing, but it does not have to be.
Getting it right means bigger savings, better performance, and a system that actually fits your lifestyle.
Here is how to figure out what size solar setup is best for your South East Queensland home.
Start With Your Power Usage
Your past power bills are your best starting point.
Look at your average daily energy use in kilowatt-hours (kWh), it is usually listed near the graph on your bill.
As a rough guide:
- Small households (1 to 2 people) use around 10 to 15 kWh per day
- Medium households (3 to 4 people) use around 15 to 25 kWh per day
- Larger households (5+ people) can use 30+ kWh per day
The more energy you use, especially during daylight hours, the bigger your solar system needs to be.
Typical Solar System Sizes for Homes
Here is a quick look at common system sizes:

💬 Tip: It often makes sense to go a little bigger if your budget allows, future-proofing for things like electric vehicles or growing families.
Roof Space Matters Too
Even if you want a larger system, your roof needs enough suitable space.
Shading, orientation, and roof size can all impact how many panels we can fit efficiently.
That is why Sun Flux Solar always does a detailed site inspection before finalising your system design.
Do You Plan to Add a Battery Later?
If you are thinking about adding a solar battery in the future, it can make sense to install a slightly larger system now.
That way, you can charge your battery faster and maximise your solar savings.
(But remember, you do not need a battery straight away to get great benefits.)
Get Expert Advice for Your Exact Needs
At Sun Flux Solar, we do not believe in cookie-cutter solar packages.
We tailor every system based on your actual energy use, roof layout, and budget, so you get the best performance and return on investment.