The soaring costs of heating, ventilating, air conditioning and refrigerating a supermarket may be causing retailers to seek answers from the heavens. Ironically, some are finding a solution there, in the form of solar energy. With their enormous energy needs and vast roof space, a handful of supermarkets have realized that they're ideal candidates for collecting and converting the sun's ultraviolet rays into immediately consumable energy. In addition to representing a more cost-efficient ...
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