The U.S. Department of Energy's (DOE) Solid-State Lighting Program has released a new report that estimates the installed stock, energy use, and lumen production of all general-illumination lighting products operating in the U.S. in 2015. The third such report issued by DOE since 2002, it provides the baseline that helps DOE plan its R&D program, and is used by both governmental and nongovernmental organizations for planning and evaluating lighting opportunities as well as additional research efforts.