One of the challenges with new technology is that there is a refinement and improvement process that invariably improves efficiency over time. Early adopters often find that “new” technology they purchased last year is obsolete a year or so later, but they can’t replace what they purchased because they have too much capital tied to the original investment. LED lighting seems to be one of those rapidly improving technologies. Here is the latest development for LED lighting: http://www.energymanagertoday.