Grumblenuts
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- Oct 16, 2017
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Serious answer:What is the shelf life of those solar panels when being used? It's a serious question
Do Solar Panels Degrade over Time?
As with most technologies, solar panels will naturally produce less energy over time. This reduced power output is called the degradation rate. The median solar panel degradation rate is about 0.5%, which simply means that a solar panel’s energy production will decrease at a rate of 0.5% per year.3 After 20 years, your panels should still be working at about 90% of its original output.