This work evaluates the concept of employing lightemitting diodes (LEDs) to harvest solar energy. LEDs are bidirectional devices: they emit light when forward biased but they are also capable of generating a photo-current when exposed to light. Due to their internal structure, LEDs are much more efficient at emitting light than at generating power. Nevertheless, there are scenarios in which LEDs are already installed outdoors and exposed to sun light. These scenarios include uses such as information displays, billboards, illumination lamps and traffic signs. These LED-based devices represent an energy resource that has already been deployed and whose installation cost has already been covered by their primary intended application.