Solar energy or the energy coming from the sun has become one of the most commonly used alternative energy sources on the planet these days. It is clean, creates no carbon emission and most importantly, as long as there’s sunshine, you can harness solar power as much as you can.
Just How Hot do Solar Panels Actually Get?
A temperature of 25°C (77°F) is considered as the peak of optimum temperature range of PV solar panels. This means that this is the perfect temperature for the solar panels to absorb sunlight and convert it to electricity at maximum efficiency.
During the summer season, solar panels can reach temperatures of up to 65°C (149°F) under direct sunlight and it can even shoot up higher on extra hot days. This high temperature can decreased solar panel efficiency which leads to reduced energy production.
Good thing is that there are several ways to lessen this adverse impact on solar panels which we are going to tackle a little bit more as you read further.
Since we mentioned earlier that higher temperatures can actually have an effect on the efficiency of solar panels, let’s discuss this some more by talking about temperature coefficient.
The temperature coefficient is a measure of how much the efficiency of a solar panel decreases for every degree Celsius that the temperature rises. Solar panels with a low temperature coefficient will be less affected by heat and will therefore produce more electricity in hot environments.
Let us take this for example - If you have solar panels with an efficiency rating of 18 percent and a temperature coefficient of -0.30, your panels will drop 0.30% of their efficiency for every degree above 25 °C. If the surface temperature of your roof increases to 28 °C (82 °F), your solar panel’s efficiency will drop to 17.8 percent. If it rises to 32 °C (90 °F), efficiency drops to 17.6 percent.
As you can see, even if the temperature has gone 7 degrees higher, from 25 °C to 32 °C, only a 0.4% difference was noted in the efficiency rating from 18% to 17.6%. Very minimal reduction in efficiency despite the increased thermal condition.
Factors that Affect Solar Panels Temperature
We now know that higher temperatures can lead to decreased solar panel efficiency. The next thing we need to understand now are the factors that affect solar panel temperature. This is so it can give you an idea on what you can do and control to determine the best case scenario for your panels.
Solar Panel Overheat Prevention Tips
Now that we know that solar panel efficiency gets greatly affected in high temperatures, let us find out what are the steps that can be done in order to minimize this.
- Install solar panels on a south-facing roof.
- Use a solar panel mounting system with good ventilation.
- Get a solar panel with a low temperature coefficient.
- Keep the panels clean and debris-free.
Get the Right Solar Setup for You
As the solar industry continues to grow over the years, more and more solar panel options are becoming available for everyone to use. Don’t forget to bear in mind though that choosing the right solar set up for your needs may take a little to a lot of browsing and researching first to ensure that you’re getting the value of your money and more importantly, your choice will be able to address your power requirements.
One of the most reliable brands out there is Nature’s Generator. Over the years, they have developed solar powered products that address different consumer needs.
Just recently, they’ve launched Powerhouse, the first ever solar generator able to power your entire house. This is their offering to those who are tired of paying high electric bills and are in constant headache due to the increasing frequency of power outages in the country.
Solar panels, just like any other electronic device, operate at maximum efficiency when the conditions are right. Just because they are designed to collect energy from the sun doesn’t mean they are not affected when the temperature gets too hot. Solar panel performance declines as they get hot - increased heat comes with decreased power output.
Getting the right type of solar panel for your needs and following best practices when installing and maintaining them will help you get the most out of this solar power collector.
* We want to give credit where credit is due. Professional writer, Ann Matthew, contributed research and content to this blog titled: How Hot do Solar Panels Get Thank you, Ann, for your contributions!