>>6358261They actually exist, solar panels work like shit with moderate heat so now they made a material capable of turning solar IR radiation into cold. Now they can built solar panels that work under 20°C when the external temperature is about 40°C and beyond.
But, like always, the jews overprice the costs of materials, and also in some countries like Spain you must do A LOT OF PAPER PUSHING BULLSHIT to buy a simple 100W 12v kit, but even with that you are going to lose money.