Can Solar Panels Overheat

Residential Solar

Can Solar Panels Overheat

James Birkinshaw
3 min read

While solar panels rely on sunlight to generate electricity, the heat that comes with it can come at a cost. Both the raw materials and electronics used in solar panel engineering are negatively affected by high temperatures.

But can they overheat? If you mean circuits frying and silicon melting – no, not really. In fact, most solar panels are designed to survive up to 65°C. The only real negative outcome from hot sunny days is a slightly lower energy output.

The efficiency of a solar panel’s energy output begins to decrease from 25°C. The decrease is dependent on the product’s temperature coefficient.


Temperature Coefficient

Solar panels are generally most efficient up until 25°C – this is the base temperature they’re tested at. At every degree beyond this point, energy output will decrease by its personal temperature coefficient. Every solar panel product out there has to state this as a percentage.

The average temperature coefficient ranges between -0.3% and -0.5% (per degree).


Hot Solar Panels in Queensland

We all know it gets hot in the Sunshine State. But does it get hot enough to affect solar energy? Well, in Cairns, the average summer temperatures range from 23.6 - 31.4°C. But further south, in Brisbane, they range from 21 - 29.8°C. So, summer will affect your energy output – just not by much.

For example: On an unnaturally hot 30°C summer’s day in Brisbane, a 300W polycrystalline solar panel with a temperature coefficient of 0.44% will decrease in efficiency by 2.2%. So, the system will only produce a maximum of 293.4W that day. But during most of the season, energy output won’t really be affected at all.

Want to install a solar panel with the right temperature coefficient for your home? Get in touch with our friendly team online or call us on 1800 270 963 for an obligation-free quote today.

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James Birkinshaw

General Manager of Pedleys Solar.

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