NGL Downlight Demonstration Project: Alston & Bird, LLP, Law Offices
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As of 2012, the U.S. Department of Energy (DOE) estimates 700 million downlight luminaires were installed in residential and commercial buildings; light-emitting diode (LED) luminaires represent less than 1% of this installed base. Downlight luminaires using conventional incandescent, halogen, and compact fluorescent lamps have lower efficacies and shorter expected lifetimes than comparable LED systems; however, the lower initial cost of conventional technology combined with the public’s uncertainties with new LED technology have limited widespread adoption of LED downlight luminaires. If LED downlight luminaires were wholly adopted, about 278 trillion British Thermal Units (tBtu) could be saved annually, equating to an annual energy cost savings of $2.6 billion.