The Greening of Willis Tower

Love For Our Environment

Willis Tower has accomplished the following in the greening of the tallest building in the Western Hemisphere:

  • Partnered with Smith & Gill architectural firm and mechanical engineering firm Environmental Systems Design to identify increased sustainability in building operations and energy savings.
  • Contracted with Leonardo Academy to pursue LEED-EB certification.
  • Instituted an aggressive building wide recycling program for paper, plastic, glass, aluminum, electronics, and construction waste. Increased building recycling rate from an average of 10 tons per month in 2007 to more than 56 tons per month in 2009.
  • Installed low flow water fixtures on building toilets, urinals and faucets, conserving more than 10,000,000 gallons of water annually.
  • Installed high-efficiency lighting systems with improved controls to reduce the building’s energy consumption.
  • Retrofitted building restroom lighting has been with low energy ballasts, bulbs, and occupancy sensors.
  • Shading windows to reduce cooling needs during warm months and heat loss through the windows during colder months.
  • Reducing the environmental impact of commuters by providing bike-to-work facilities and hybrid vehicle incentives.
  • Implemented a “green” cleaning program to reduce the use of harmful chemicals, improve indoor air quality, and reduce waste.
  • Installed a mock-up of world’s tallest “green roof” on the 90th floor roof to test its ability to absorb storm water and reduce urban heat island effect.
Important Notice Regarding COVID-19

Willis Tower and Skydeck Chicago have implemented measures consistent with CDC and local and federal guidance to try to reduce the spread of COVID-19 on the premises, including enhanced cleaning protocols. Even with these procedures in place, PLEASE BE ADVISED that building occupants, building and Skydeck visitors, or others currently or previously present upon this property and/or the Skydeck MAY HAVE CONTRACTED OR BEEN EXPOSED TO COVID-19 or other infectious diseases, and may expose you. By accessing and using building common areas, the Skydeck, and their associated amenities, you and your party voluntarily assume all risks of your use—INCLUDING THE RISK OF EXPOSURE TO INFECTIOUS DISEASE—and you waive all claims, including claims for negligence, against Willis Tower, Skydeck Chicago, and their respective owners, managers, affiliates, agents and representatives, arising out of such use. The above parties hereby disclaim all liability for any injuries arising out of your use of this property and the Skydeck, including exposure to infectious disease.

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