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It was estimated that the geothermal system would reduce electric consumption on campus by 25% and natural gas consumption by 70%. Stiles says, “Based on an extensive monitoring study, this turned out to be quite accurate.” He notes that savings were studied very carefully for the first three years of operation, but “it is impossible to know the savings now, since the operation of the buildings has been changed so significantly. But we are confident of the persistence of savings.”