Treeby, Western Australia, located in the Southern Sub Tropics, offers a promising environment for solar PV energy generation throughout the year. The location's solar potential varies significantly across seasons, presenting both opportunities and challenges for homeowners and businesses considering solar installations.
Seasonal Solar Performance
Summer stands out as the peak season for solar energy production in Treeby, with an impressive 8.83 kWh/day per kW of installed solar capacity. Spring follows as the second-best season, generating 6.96 kWh/day. Autumn sees a noticeable decrease to 4.54 kWh/day, while winter experiences the lowest output at 3.13 kWh/day per kW installed.
This seasonal variation indicates that Treeby is particularly well-suited for solar energy generation during the warmer months, from late spring through early autumn. However, the significant drop in winter production suggests that supplementary energy sources or energy storage solutions may be beneficial for year-round energy independence.
Optimal Panel Installation
To maximize year-round solar energy production in Treeby, fixed solar panels should be installed at a tilt angle of 27 degrees facing North. This angle has been calculated to optimize the panels' exposure to sunlight throughout the year, taking into account the location's latitude and the Earth's elliptical orbit.
Environmental Considerations
While Treeby generally offers favorable conditions for solar energy production, there are a few environmental factors to consider:
- Dust storms: The arid climate of Western Australia can lead to occasional dust storms, which may temporarily reduce panel efficiency. Regular cleaning and maintenance can mitigate this issue.
- Bushfire smoke: During bushfire season, smoke particles in the air can slightly decrease solar panel performance. Installing high-quality panels with anti-soiling coatings can help maintain efficiency.
To ensure optimal energy production, consider implementing a regular cleaning schedule for the panels and investing in a monitoring system to track performance. Additionally, choosing high-quality, durable panels designed to withstand the local climate conditions will help maintain consistent energy output throughout the year.
Note: The Southern Sub Tropics extend from -23.5° latitude South down to -35° latitude.
So far, we have conducted calculations to evaluate the solar photovoltaic (PV) potential in 501 locations across Australia. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Australia by location
Solar output per kW of installed solar PV by season in Treeby
Seasonal solar PV output for Latitude: -32.1226, Longitude: 115.8788 (Treeby, Australia), based on our analysis of 8760 hourly intervals of solar and meteorological data (one whole year) retrieved for that set of coordinates/location from NASA POWER (The Prediction of Worldwide Energy Resources) API:
 
Ideally tilt fixed solar panels 27° North in Treeby, Australia
To maximize your solar PV system's energy output in Treeby, Australia (Lat/Long -32.1226, 115.8788) throughout the year, you should tilt your panels at an angle of 27° North for fixed panel installations.
As the Earth revolves around the Sun each year, the maximum angle of elevation of the Sun varies by +/- 23.45 degrees from its equinox elevation angle for a particular latitude. Finding the exact optimal angle to maximise solar PV production throughout the year can be challenging, but with careful consideration of historical solar energy and meteorological data for a certain location, it can be done precisely.
We use our own calculation, which incorporates NASA solar and meteorological data for the exact Lat/Long coordinates, to determine the ideal tilt angle of a solar panel that will yield maximum annual solar output. We calculate the optimal angle for each day of the year, taking into account its contribution to the yearly total PV potential at that specific location.
Seasonally adjusted solar panel tilt angles for Treeby, Australia
If you can adjust the tilt angle of your solar PV panels, please refer to the seasonal tilt angles below for optimal solar energy production in Treeby, Australia. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 27° North tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 16° North in Summer | 37° North in Autumn | 47° North in Winter | 25° North in Spring |
Our recommendations take into account more than just latitude and Earth's position in its elliptical orbit around the Sun. We also incorporate historical solar and meteorological data from NASA's Prediction of Worldwide Energy Resources (POWER) API to assign a weight to each ideal angle for each day based on its historical contribution to overall solar PV potential during a specific season.
This approach allows us to provide much more accurate recommendations than relying solely on latitude, as it considers unique weather conditions in different locations sharing the same latitude worldwide.
Calculate solar panel row spacing in Treeby, Australia
We've added a feature to calculate minimum solar panel row spacing by location. Enter your panel size and orientation below to get the minimum spacing in Treeby, Australia.
Our calculation method
- Solar Position:
We determine the Sun's position on the Winter solstice using the location's latitude and solar declination. - Shadow Projection:
We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle. - Minimum Spacing:
We add the shadow length to the horizontal space occupied by tilted panels.
This approach ensures maximum space efficiency while avoiding shading during critical times, as the Winter solstice represents the worst-case scenario for shadow length.
Topography for solar PV around Treeby, Australia
The topography around Treeby, Australia, located at latitude -32.1226 and longitude 115.8788, is characterized by gently rolling terrain with a mix of low-lying areas and subtle elevations. This region, situated in the southwestern part of Western Australia, is part of the Swan Coastal Plain, which extends along the coast from north of Perth to the state's southwest corner. The landscape in and around Treeby features a combination of urban development, remnant bushland, and some agricultural areas. The terrain is generally flat to mildly undulating, with elevations ranging from about 20 to 40 meters above sea level. Small creeks and drainage lines crisscross the area, contributing to the subtle variations in the topography. To the east of Treeby, the land gradually rises towards the Darling Scarp, a low escarpment that marks the edge of the coastal plain. This transition zone creates a slightly more varied topography with gentle slopes and occasional rocky outcrops.
Suitable Areas for Large-scale Solar PV
When considering areas nearby that would be most suited to large-scale solar photovoltaic (PV) installations, several factors come into play. The ideal locations would have the following characteristics: Firstly, relatively flat or gently sloping land is preferred for solar PV installations. The areas to the west and southwest of Treeby, extending towards the coast, offer expansive stretches of level terrain that could be suitable for such projects. Secondly, areas with minimal shading from trees or structures are ideal. The cleared agricultural lands and open spaces found in the surrounding rural areas, particularly to the south and southeast of Treeby, could provide excellent opportunities for solar farms. Thirdly, proximity to existing electrical infrastructure is important. The suburban areas surrounding Treeby have established power grids, which could facilitate the integration of large-scale solar projects. Lastly, areas with lower environmental sensitivity would be preferable. Some of the already disturbed or degraded lands in the region, such as former industrial sites or low-productivity agricultural areas, could be repurposed for solar energy production with minimal ecological impact. It's worth noting that while the topography and land use patterns around Treeby offer potential for solar PV development, any large-scale project would require detailed site-specific assessments, including environmental impact studies and community consultations, before proceeding.Australia solar PV Stats as a country
Australia ranks 7th in the world for cumulative solar PV capacity, with 19,076 total MW's of solar PV installed. This means that 10.70% of Australia's total energy as a country comes from solar PV (that's 2nd in the world). Each year Australia is generating 742 Watts from solar PV per capita (Australia ranks 2nd in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in Australia?
Yes, there are a variety of incentives available in Australia to businesses wanting to install solar energy. These include:
1. Renewable Energy Target (RET): The RET provides businesses with financial assistance for installing and operating renewable energy systems such as solar panels. Businesses may be eligible to receive certificates that can be sold or traded on the open market for additional income.
2. Feed-in Tariffs: Some states offer feed-in tariffs which pay businesses for generating and exporting excess electricity from their solar panel system back into the grid during peak demand periods.
3. Solar Credits: The Solar Credits program provides households and small business owners with an upfront discount when purchasing a new solar system, based on the amount of renewable energy generated by the system over its lifetime.
4. Tax Breaks: Small business owners may be able to claim tax deductions on certain expenses associated with installing a solar power system, including installation costs, maintenance expenses and interest payments related to financing arrangements taken out specifically for this purpose.
Do you have more up to date information than this on incentives towards solar PV projects in Australia? Please reach out to us and help us keep this information current. Thanks!
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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Friday 3rd of January 2025
Last Updated: Monday 21st of July 2025
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Compare this location to others worldwide for solar PV potential
The solar PV analyses available on our website, including this one, are offered as a free service to the global community. Our aim is to provide education and aid informed decision-making regarding solar PV installations.
However, please note that these analyses are general guidance and may not meet specific project requirements. For in-depth, tailored forecasts and analysis crucial for feasibility studies or when pursuing maximum ROI from your solar projects, feel free to contact us; we offer comprehensive consulting services expressly for this purpose.
Helping you assess viability of solar PV for your site
Calculate Your Optimal Solar Panel Tilt Angle: A Comprehensive Guide
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