880-Watt-Solarmodule erzeugen durch Wolken einen Spitzenwert von 1.050 Watt

Whether an engineering student or just an enthusiast, one surely knows that a system’s capacity is often described at its peak. Reaching this peak is possible but usually only for short periods. But a system never goes overboard without getting something seriously wrong. Especially, a power generation system.

So, when a solar panel seems to be doing the job of an entire system plus a little bit more, one assumes that the readings might be wrong. But if that’s not the case, is it breaking the laws of physics, or is there something that we haven’t been told about?

No conspiracy theory hereBefore someone jumps on the bandwagon about having been tricked into accepting low-performing clean energy systems at high costs or how large corporations are drip-feeding these technologies to maximize profits, let’s make it very clear that there are no conspiracy theories here. The facts are simple.

Technik, Energie und Einsatz

The user had installed two 440 W solar panels on the roof of his XLWB Sprinter. They are dual-glass, all-black N-type bifacial panels, and one day the user notices that their output exceeds 1,000 W.

Instead of just assuming these panels will always outperform like this, the user turned to the media platform Reddit to see if anyone else had a similar experience.

The wise audience on the platform, too, did not float any conspiracy theories and even directed the user to the likely cause of this superachievement, as identified, researchers have already noticed this and have also written research papers about it. So what is happening?

Technik und Auswirkungen

As other Redditors rightly pointed out, certain atmospheric conditions cause the panels to receive more light than they do on the ground. Since the panels are also mounted on a van rather than a roof, they are likely to receive more sunlight, unobstructed.

When exposed to a wider sky, the panels are also more likely to see different types of clouds throughout the day. More clouds mean the panels are also exposed to the cloud edge enhancement (CEE) effect. Technically known as cloud irradiance, this effect increases horizontal irradiance on the ground to levels above those expected for a cloudless sky.

As another Redditor added, conditions like rain also impact solar panel output. With cooler panels and ambient air after a shower, solar panels can produce more energy than on a perfectly sunny day, when the panels are heating up in the sunlight.

Technischer Hintergrund

Researchers at the Pontifical Catholic University of Chile studied CEEs in solar panels and published a paper in 2019, highlighting the impact of cloud irradiance on solar power plants. While the user was a bit lucky to get extra power from his solar panels, Chilean researchers warn that such events pose a risk to solar utilities.

CEEs that occurred in Brazil in 2019 caused significant losses for plant operators. Deeper studies of such events can help manufacturers implement fail-safes to protect solar panels in the future. It is difficult to know whether the panels were designed with any kind of fail-safes in mind.

Nevertheless, it gave the user extra power in the conditions they were operating in, instead of breaking down. For those who want to drill more oil and gas, instead of adopting clean energy solutions, when was the last time a cloud event delivered 20 percent more mileage on the gas in your tank?