Chicago's Sears Tower (soon to become "Willis Tower") will be undergoing a major update, cutting electricity usage by 80%. Also planned is a new "net zero" hotel next door. The hotel and tower updates are both being designed by Adrian Smith + Gordon Gill Architecture.


Chicago's Sears Tower (soon to become "Willis Tower") will be undergoing a major update, cutting electricity usage by 80%. Also planned is a new "net zero" hotel next door. The hotel and tower updates are both being designed by Adrian Smith + Gordon Gill Architecture. Chicago Sun-Times
Highlights of the sears tower makeover

• 50-story, 500-room hotel planned at the northeast corner of Jackson and Wacker will use solar and wind technology to strive for "net zero" energy use.
• Granite plaza to be replaced with green space, new retail, permeable pavement and, along Adams Street, a solar-powered digital display for news and event information.
• Lobby "learning center" to demonstrate the latest in energy production and conservation.
• Replacement of 16,000 windows and metal panels to save heating energy by up to 60 percent.
• New mechanical systems to incorporate fuel cell technology.
• Advanced lighting controls will adjust to movement and daylight.
• Elevators get new motors that go on or off almost instantly to adjust with demand.
• Escalators get motion detectors.
• Solar hot water panels on 90th floor roof will heat water for the restrooms.
• New plumbing fixtures will cut water use.
• Wind turbines and green roofs will be tested at various levels except the tower's antenna roof.
• Programs for tenants include bicycle sharing and recycling of paper and electronics.