For most solar panels, the enemy is shade. It can shut down the whole panel very easily. That’s why Sunflare builds a bypass diode into each cell. That way, only the cells that are shaded turn off. With most silicon panels there is a bypass diode per string or sometimes 1 diode for 2 strings. Don’t let shade mess with your comfort level while you are off the grid and on vacation. This video demonstrates of the effects of shading.