. . . "The world is ripe with efficiency opportunities. (The low-hanging fruit, as Lovins puts it, is mushing up around our ankles.) His Rocky Mountain Institute points out that in industrial settings, there are abundant opportunities to save 70% to 90% of the energy and cost for lighting, fan, and pump systems; 50% for electric motors; and 60% in areas such as heating, cooling, office equipment, an" .