Back in 2008, the Department of Energy (DOE) launched the Bright Tomorrow Lighting Prize (L Prize) competition, as instructed by the Energy Independence and Security Act of 2007. The L Prize challenged the lighting industry to develop an efficient LED to replace the common 60 watt incandescent bulb. Any entries received were put through rigorous short-term and long-term performance testing. The winning bulb was required to produce more than 900 lumens and also have a 25,000 hour life. In addition, it must also have a Color Rendering Index (CRI) higher than 90 and a Correlated Color Temperature (CCT) between 2700K and 3000K-all while using less than 10 watts of electricity!

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