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See the Clean Energy Council guide below for an indication of production in your area: Average daily production
Average daily production
|The Rated output is that achieved in perfect laboratory conditions.|
Shading has a large effect on the performance of a solar power system. The time of day matters; if the shading occurs outside the hours of 9am-3pm, the impact may be nominal. Partial shading of the system also matters as all panels in a section need to run at the same voltage; if one panel is shaded even partially, this will bring down the production of the whole system. There are ways around this such as splitting the array into multiple strings or using micro inverters on the back of panels which we can suggest for your circumstances.
In the Southern hemisphere, North facing roofs are the best for solar though the loss from facing the system East or West is nominal and more recently some people believe that a Western orientation is equally as effective as a Northern one, as the power generated from the solar panel more optimally aligns with the power usage in the premises.
The angle of your roof doesn’t have a huge impact on your system’s production though to get the best production, your roof should be pitched at the same degrees as the latitude of your location.
We are often asked whether tilt frames should be used to tilt the panels so that they’re closer to the optimal angle. In most cases, we recommend using the money you would have spent on tilt frames on purchasing additional panels as the difference in production for say a 25-degree roof and a 0-degree roof is only 5% production. Additionally, tilt frames require space between the rows of panels so that panels don’t cast shadows over each other meaning that if you use tilt frames you can only install fewer panels.
This isn’t worth worrying about. A 25 degree pitch is optimal and you’ll lose 1% production with every 5 degree deviation. This means that the difference between a flat roof and the average roof is 5% production.
Yes we can. Venergy will produce a roof plan for you, or multiple roof plans if you are considering different sized systems, and will also get on your roof to assess it before the day of install.
Absolutely! Venergy will take care of the rebate so all you pay is the difference and don’t have to worry about any of the paperwork. We will also liaise with SA Power Networks to get you connected to the grid.
Thinking about Solar? Get in touch with our expert solar consultants for further information.