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Solar PV Analysis of Wonthaggi, Australia
Wonthaggi, Victoria, Australia, located in the Southern Temperate Zone, offers a mixed potential for solar PV energy generation throughout the year. The location's seasonal variations in solar output highlight both opportunities and challenges for maximizing renewable energy production.
Seasonal Solar Performance
Summer stands out as the peak season for solar energy generation in Wonthaggi, with an impressive 7.34kWh per day output for each kW of installed solar capacity. Spring follows as the second-most productive season, yielding 5.84kWh/day. These warmer months present ideal conditions for harnessing solar energy, with longer daylight hours and more direct sunlight.
Autumn sees a significant drop in solar output, producing 3.76kWh/day. Winter experiences the lowest generation at 2.49kWh/day, reflecting shorter days and less intense sunlight during the cooler months. Despite this seasonal dip, Wonthaggi still maintains a year-round potential for solar energy production, albeit with notable fluctuations.
Optimizing Solar Panel Installation
To maximize year-round solar energy production in Wonthaggi, fixed solar panels should be tilted at a 33-degree angle facing North. This optimal angle takes into account the location's latitude and seasonal sun paths, ensuring the best possible exposure to sunlight throughout the year.
Environmental and Weather Considerations
While Wonthaggi's climate is generally favorable for solar energy production, there are some factors that could potentially impact efficiency:
- Coastal location: Proximity to the ocean may lead to salt spray accumulation on panels, potentially reducing efficiency over time.
- Winter cloud cover: The cooler months often bring increased cloud cover, which can further diminish solar output during the already less productive winter season.
Preventative Measures
To mitigate these environmental factors and ensure optimal solar performance, consider the following measures:
1. Regular cleaning: Implement a routine cleaning schedule to remove salt deposits and other debris from the panels, maintaining their efficiency.
2. High-quality panels: Invest in solar panels designed to withstand coastal conditions, with corrosion-resistant materials and robust sealing.
3. Micro-inverters or power optimizers: These technologies can help maximize energy production from each panel, even when some panels are partially shaded or affected by environmental factors.
By taking these precautions and optimizing panel placement, Wonthaggi residents can make the most of their solar PV systems, capitalizing on the abundant summer and spring sunshine while mitigating the challenges posed by the location's coastal environment and seasonal variations.
Note: The Southern Temperate Zone extends from -35° latitude South down to -66.5° 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 Wonthaggi
Seasonal solar PV output for Latitude: -38.6016, Longitude: 145.5861 (Wonthaggi, 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 33° North in Wonthaggi, Australia
To maximize your solar PV system's energy output in Wonthaggi, Australia (Lat/Long -38.6016, 145.5861) throughout the year, you should tilt your panels at an angle of 33° 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 Wonthaggi, 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 Wonthaggi, Australia. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 33° North tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 22° North in Summer | 43° North in Autumn | 53° North in Winter | 31° 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 Wonthaggi, 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 Wonthaggi, 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 Wonthaggi, Australia
The topography around Wonthaggi, Australia, is characterized by gently rolling hills and coastal plains. Located in the South Gippsland region of Victoria, Wonthaggi sits near the coast of Bass Strait. The landscape is a mix of farmland, patches of native vegetation, and some wetlands closer to the coast.
To the north and northeast of Wonthaggi, the terrain gradually rises into the Strzelecki Ranges, which are low mountains covered in dense forests. These hills become more pronounced as you move further inland. To the south and southeast, the land flattens out towards the coast, with some areas of sandy beaches and rocky cliffs along the shoreline.
The immediate vicinity of Wonthaggi features open, undulating countryside that was once extensively mined for coal. This historical mining activity has left its mark on the local landscape, with some areas showing evidence of past excavations and subsequent rehabilitation efforts.
Areas Suited for Large-Scale Solar PV
For large-scale solar photovoltaic (PV) installations, the most suitable areas near Wonthaggi would be:
- Inland plains: The relatively flat agricultural lands to the north and northwest of Wonthaggi offer good potential for solar farms. These areas receive ample sunlight and have fewer obstructions that could cast shadows on solar panels.
- Former mining sites: Rehabilitated coal mining areas around Wonthaggi could be repurposed for solar energy production. These sites often have existing infrastructure, such as access roads and electrical connections, which could be advantageous for solar farm development.
- Gently sloping hillsides: Some of the moderately sloping areas to the northeast, facing north or northwest, could be suitable for solar installations. These slopes can provide good sun exposure throughout the day.
It's important to note that while the topography is generally favorable for solar PV in many areas around Wonthaggi, other factors such as proximity to the electrical grid, local zoning regulations, and environmental considerations would also play crucial roles in determining the most suitable locations for large-scale solar projects.
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!
Citation Guide
Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Sunday 29th of September 2024
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
Enhance your solar panel's performance with our in-depth guide. Determine the best tilt angle using hard data, debunk common misunderstandings, and gain insight into how your specific location affects solar energy production.
