An evaluation of the concept of using LEDs to harvest solar energy has been presented. LEDs are made out of direct bandgap semiconductor materials that can produce an electron-hole pair when a photon is absorbed resulting in a photo-generated current. LEDs installed outdoors as part of electronic displays or billboards represent a potential energy source whose installation and fabrication costs have already been covered by the primary application. An evaluation of the energy-harvesting capability of LEDs of different color, size, power rating and manufacturer has been carried out by measuring the I-V curves of the LEDs when exposed to sun light. It was found that up to 133 µW of power can be harvested from a red LED. A bidirectional DC-DC converter to transfer energy to and from the LED was built and tested. Future work includes designing a circuit to multiplex the display and energy harvesting functions.