If you’re installing solar panels in Perth, getting the orientation, tilt, and placement right is as important as choosing the right system. A proper system setup ensures you’ll generate the most energy, save the most on your electricity bills, and extend the life of your solar investment. As Perth enjoys an abundance of sunlight, our panels should generate plenty of power throughout most of the year.
Ideal solar panel orientation in Perth
In Perth, solar panels perform best when they face north, so they can capture the maximum amount of sunlight available. East and west-facing solar panels can also produce energy but to a lesser extent.
North-facing panels: Deliver the highest year-round energy yield.
East or west-facing panels: Can still work well but typically produce 10–20% less energy compared to north-facing panels. East-facing panels generate more energy in the morning, while west-facing panels produce more in the afternoon.
South-facing panels: Usually not recommended, as energy output is significantly lower.
Perth’s sunshine hours mean most homes with reasonably unobstructed roofs can produce enough energy to cover the majority of their electricity needs throughout the year.
Optimal tilt for Perth roofs
The angle at which your solar panels are installed affects how much sunlight they capture.
Ideal tilt: Around 20 - 30°
Flat roofs: Panels can be mounted on adjustable racks to achieve the ideal angle.
Steeper roofs: Panels may need slight adjustments or spacing to reduce shading from the roof itself.
With Perth’s long, sunny days, even slightly suboptimal tilts can still result in excellent annual energy output.
Roof types and solar panel considerations
Different roof types in Perth have different installation considerations:
Tile roofs: Panels are mounted using hooks or brackets that don’t penetrate the tiles; however, installers recommend having some spare tiles available to cater for possible tile breakages during installation.
Tin roofs: Panels can be clamped directly onto the roof, making installation quicker and less invasive.
Complex or multi-level roofs: Installation can be more intricate due to the complexity of the roof layout, varying roof pitches, or multiple roof sections. This can impact panel placement and overall system design.
Kleenheat Spark uses certified local installers who will create a system design that’s tailored to your home and install the solar panels in the best possible position for your setup. Simply use the online tool to receive a quote to get started on the solar journey.