25/06/2021
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Believe it or not, solar panels would have to rank as one of the biggest tree killers in Australia at the moment. The astounding uptake of solar panels on our roofs often sees homeowners following the recommendations of the installers to take out large trees so that their panels can operate more efficiently. Take for example, this 100+ year-old perfectly healthy sugar gum, which appears to have been taken out for 16 solar panels. The tree is now fully gone.
So, is taking out that large tree really worthwhile to improve the performance of your solar panels?
The simple answer is no, most likely not! There is currently research being undertaken at Flindersβ University to put some more accurate $$ values on this. It is becoming less clear that there is a guaranteed economic benefit to you by removing the tree and adding solar panels. Never mind considering any sort of environmental benefit the tree brings. New technology has also further added significant improvements to solar panels, reducing the impact that shady trees might have on their performance.
Trees play an underrated but often critical role in cooling our homes. They act as our cities air conditioner, helping to mitigate the urban heat island effect. The shading they provide saves you $$ on your air conditioner bills.
Most Australian Native trees, especially eucalypts, have leaves that hang vertically. This is to reduce the amount of harsh mid-day sun that they attract β often when your solar panels are producing the most electricity.
Removing large trees can cost thousands. So potentially you can have the best of both worlds! A tree that provides shading to reduce your energy bills, adds significant value to your home and solar panels as well!
Thank you to TREENET for some fantastic research papers on this topic. For those that are interested, you might also find this article of some use: https://renew.org.au/renew-magazine/solar-batteries/solar-on-a-shady-roof/