If you’re considering installing solar panels, you likely want to know how much energy your system can generate, and whether it’s a worthwhile investment for your location. Our solar energy calculator can help you estimate how much energy your solar panels might produce, based on your geographic location in Australia.
It’s important to note, however, that this calculator provides only an estimate. While it uses accurate, region-specific data, it should not be relied upon for detailed financial calculations or system design decisions. Solar energy generation can vary based on a range of factors, such as local weather conditions, shading, and panel orientation. Our tool is designed to give you a general idea of the energy your solar system can produce on average throughout the year, based on industry-standard data.
How the Calculator Works
The calculator uses solar radiation data sourced from the Australian Solar Radiation Data Handbook, which provides comprehensive information about the average solar radiation levels for various locations across Australia. Solar radiation is essentially the amount of sunlight reaching the Earth’s surface and is a key factor in determining the performance of your solar panels.
The calculator estimates the average daily energy generation in kilowatt-hours (kWh) by factoring in your location’s solar radiation levels. To calculate your annual generation, simply multiply the daily estimated output by 365 (the number of days in a year). For example, if the calculator estimates 10 kWh of daily energy generation, you can expect around 3,650 kWh per year.
The Role of Panel Orientation: Azimuth Angle and Inclination
A key element in solar panel performance is their orientation—both the azimuth angle and the angle of inclination.
- Azimuth Angle: This refers to the horizontal angle at which solar panels face relative to true north. For most locations in the Southern Hemisphere, the optimal azimuth angle is towards true north, as this maximises exposure to the sun throughout the day. The azimuth angle can range from 0° (true north) to 180° (true south), depending on how your panels are positioned. A slight variation from north can reduce the amount of sunlight your panels capture, so it’s important to consider this when installing your system.
- Angle of Inclination: This refers to the tilt of the panels from the horizontal. Panels installed at an angle that matches your location’s latitude typically capture the most sunlight. However, adjustments can be made to optimise performance based on seasonal changes and other factors.
The solar energy calculator factors in these parameters—azimuth angle and inclination angle—to give a more accurate estimate of the energy production. The calculator assumes optimal panel orientation, but you can adjust these settings for a more customised estimate based on your installation preferences.
Disclaimer: An Estimate, Not a Guarantee
While the solar energy calculator is a powerful tool for estimating solar power generation, it’s important to remember that the result is only an average estimate. Several external factors, including shading, panel cleanliness, and local climate conditions, can affect real-world performance. As such, the results should be used as a starting point in your decision-making process, but not as a final financial or technical guide.
Conclusion
In summary, our solar energy calculator is an excellent tool for understanding the potential energy your solar panels could generate based on your location in Australia. It takes into account solar radiation data, azimuth angle, and the angle of inclination of your panels to provide a realistic estimate. For a rough idea of your yearly energy generation, simply multiply the daily output by 365. However, remember that this is only an estimate and should be considered as part of a broader decision-making process.
If you’re serious about going solar, it’s always recommended to consult with a professional installer to get a precise system design and financial projections.
Remember to check out our STC Rebate calculator!