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Macy’s (Brooklyn) basement shops look a whole lot brighter, but they are saving 77%+ in energy cost over metal halide originally designed. Felix Tsimmerman of Mader, Smyth, Buyyounouski and Assoc., engineer was very pleased, along with all the folks at Macy’s. They loved the use of motion sensors, to take savings from 50% for just lighting load, to the 77% level with sensors.