Bifalgorithm post

A solar panel makes the least power on the day you'd expect the most. Blazing sun, cloudless sky, and the output quietly drops. The light didn't fail it. The heat did. We picture it simply. More sun, more heat, more power. Two of those help. The third cancels the first. Inside the cell, sunlight and heat do two different jobs. Light knocks electrons loose, and that loose flow is your current. The voltage comes from somewhere else. The panel holding those freed electrons apart, refusing to let them slide home. Call that its grip. Heat is about to loosen it. Now warm the silicon. The atoms jitter harder and that nudges the electrons back across on their own. The grip loosens and the voltage sacks. For a typical silicon panel, the power drops about 4/10 of a percent for every degree it warms. Stack that over a blazing afternoon and it sheds over a tenth of its rated output to heat. A panel in full sun runs as much as 30 degrees hotter than the air. Lay your hand on one at midday and you can barely hold it there. That's why Desert Solar misses its paper numbers and why installers leave an air gap behind each panel. So the perfect day for solar isn't the scorcher. A cold, bright day beats a scorching one.

A solar panel makes the least power on the day you'd expect the most. Blazing sun, cloudless sky, and the output quietly drops. The light didn't fail it. The h…