Whether solar pays off for your Perth home depends on how and when you use power, your roof, shading and whether you add a battery or not. Though when designed and installed correctly we can add that we have not found a Perth home that has not had a fast return on its investment yet.
Perth gets more sunshine than almost anywhere else in Australia, so the sun is rarely the limiting factor. What actually determines whether solar works well for you is what’s happening inside your home.
How you use power matters more than where you live
Solar generates power during the day. If someone is home using appliances, running the aircon or charging devices during daylight hours, a good chunk of that generation gets used directly. That’s where the value is strongest.
If your home sits empty during the day and power use spikes in the evenings, you’ll export most of what your panels generate and import power back at night. The economics still work, but they’re not as straightforward as a daytime-heavy household.
Before anything else, it’s worth looking at your last few power bills and thinking about when your household actually uses electricity.
Your roof orientation and available space
North-facing roof space gets the most direct sun across the day and is the best position for solar panels. West-facing works well too, particularly for afternoon generation when household demand often picks up.
Shading is the other thing to check. Trees, neighbouring buildings or chimneys that cast shade across the roof for part of the day will reduce output from any panels they cover. A good installer will assess this before specifying your system.
The size of your roof also determines how large a system you can fit. Larger systems generate more, but there’s a point where the panels you can fit match what your household actually uses, so bigger isn’t always better without a battery to store the excess.
Should you add a battery?
A battery stores power generated during the day for use at night. For households with evening-heavy usage, it closes the gap between what solar generates and what you actually consume yourself.
Stinson installs many battery storage solution options alongside solar systems. These systems integrate with the solar setup and manages when to store power, when to use it and when to draw from the grid, depending on your usage patterns and tariff.
The case for a battery is stronger if your evening electricity use is high, if you’re on a time-of-use tariff where night rates are expensive, or if backup power during outages matters to you.
Adding a battery increases upfront cost. The right answer depends on your household’s load profile, which a proper site assessment will map out. You can learn more about solar batteries and what to consider before adding one.
Government incentives
Federal government incentives currently apply to residential solar and battery installations and bring the upfront cost down. The specifics change over time, so rather than quoting figures that may be out of date, it’s worth confirming current entitlements when you get a quote. A reputable installer will factor these in as part of the proposal. And in fact right now the rebates have almost never been better.
What to look for in an installer
The quality of your installation affects how the system performs over its lifetime. Panels and inverters need to be matched correctly, wiring needs to be done to standard, and the system needs to be commissioned properly so monitoring and any battery integration work as they should.
Stinson has been installing solar across Perth for close to 30 years and holds over 90 five-star reviews. The team is based in Osborne Park and covers the Perth metro area.
Is it worth it for your home?
For most Perth homes, yes. The city’s solar resource is exceptional, power prices have risen steadily, and the technology has matured. The detail is in whether the system is sized and installed well for your specific home and usage.
Talk to Stinson about a solar assessment for your Perth home.