This is in a location that only receives a little more than half as much rainfall as Adelaide, which is Australia’s driest capital. Grime will build up, but eventually there will be sufficient rain to wash most of it off.Ĭleaning in addition to what is done naturally by rain will boost panel output, since on average they will have even less dirt on them, but it doesn’t help much.Ī study done in the United States in Tucson, Arizona, found that cleaning solar panels only improved their output by around 1%.
This is because, for most homes in Australia, rainfall is enough to keep solar panels reasonably clean. Normal Grime Hardly Affects Solar Panelsĭirt on solar panels usually has very little effect on their performance. Or if your system is already installed, spending money on energy efficiency is far more cost effective than paying people to clean your panels.
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It makes far more sense simply to install a slightly larger system to compensate for the minor loss that results from grime than it does to pay someone to clean them. If a dust storm has covered your panels in dirt or pelicans have had a poop party on your roof, then it’s a pretty good idea.īut most of the time solar panel cleaning is not worth it.īecause the average increase in output from cleaning panels is usually small, taking into account the time and risk of injury if you do it yourself or how much you will need to pay to have it done, under normal circumstances it is not cost effective. And sometimes this obvious solution will be a sensible course of action. The obvious solution is to pay someone to clean those panels, or get out there and clean them yourself. As soon as your panels are out in the open in the clean air, or not so clean air, dust will start to settle on them, blocking sunlight, reducing their efficiency, and costing you money. Admittedly, it is a very shallow hill and it might take over 40 years to get to the bottom, but day one is going to be as good as it gets. The day your solar panels are installed is the day you will get the best performance out of them.
Solar Panel Cleaning – It’s A Dirty Job, But Nobody Has To Do It
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