Refrigerated and freezer cases account for nearly half of a supermarket's annual electricity costs, according to the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute, Troy, N.Y. Meanwhile, the lighting used to illuminate those cases figures in one-quarter of those costs — or one out of every eight dollars spent on energy in a store. In other words, case lighting is a pretty significant energy factor in any supermarket. Fortunately, advancements in lighting technology over ...
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