A square centimeter is a very small surface, though. Scaling it up for the worst case is hardly a problem. The board in the picture has dozens of square centime

A square centimeter is a very small surface, though. Scaling it up for the worst case is hardly a problem. The board in the picture has dozens of square centimeters on its own, so wherever that board can be used, clearly a much larger PV area can be used as well.