Improvements in lighting technology for light-emitting diode (LED) bulbs have increased lighting efficiency, or efficacy, as well as color quality. In September of this year, several manufacturers released ENERGY STAR®-qualified bulbs surpassing 100 lumens per watt. For comparison, traditional incandescent bulbs, which do not meet current light bulb efficiency standards and are no longer sold, provide 13 to 18 lumens per watt. When first introduced, LED bulbs were far more expensive than other bulbs, but their costs have since come down dramatically. Even now, however, they are often the most expensive bulbs on the shelf, but their much longer lifetimes and lower power draw can economically justify the higher initial cost Costs to consumers have also been reduced by dozens of energy-efficiency programs that offer in-store or mail-in rebates, discounts, or other incentives. The ENERGY STAR program estimates that from 2011 through 2013, energy efficiency program sponsors spent $400 […]