LED is short for Light Emitting Diode. The first manifestation of the lighting was as a light emitting solid discovered in 1905. In the 1960s, General Electric, Texas Instruments, and RCA Laboratories discovered that when electricity was passed through gallium arsenide, it emitted an infrared radiation. LED replacement bulbs can help you to replace your regular ones which will help you to lower your energy costs. This article details out where to buy LED replacement bulbs.