Because the source of light is mostly up in the sky, and solar panels work best when they are mostly perpendicular to the direction the light is shining.

[–] postmateDumbass@lemmy.world 1 points 1 week ago (1 children)

IMO solution is a 'european tilt and turn' window system with an inner window (tint or shade optional) and a solar panel shutter.

With drive motors and suntrackers for the luxury version.

[–] Bytemeister@lemmy.world 1 points 1 week ago

Sounds like what you are suggesting is a standalone solar panel mounted on a sun tracking mount above a window? Still, it would be better and cheaper to just lay a solar panel out in the yard and then install a conventional window shutter.