The Sears Tower in Chicago is to undergo a “green” change that will cost a cool $350 million. The plan is to make the 110-story office tower,the tallest building in the United States as well as in the Western Hemisphere at a height of 1,450 feet, “a beacon for environmentally sound space.”

Green Sears Tower
American Landmark Properties, which owns Sears Tower, expects to cut the building’s electricity consumption by 80% and water consumption by 40%. Sears Tower, built in 1973, will be renamed Willis Tower later in the summer of 2009.
The 9-point “green” plan for Sears Tower includes the following measures:
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