Last year, a test of fiber-optic lighting in refrigerated display case doors at an Albertsons store in Fullerton, Calif., demonstrated that fiber-optic technology consumed one-third as much energy as traditional fluorescent lighting while providing comparable luminescence. Since then, Supervalu, Minneapolis — Albertsons' parent — has ordered the technology for all 120 refrigerated doors in the Fullerton store, and other retailers such as Brookshire Grocery Co. have retrofitted refrigerated ...

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