{"id":4615,"date":"2009-06-25T13:43:31","date_gmt":"2009-06-25T19:43:31","guid":{"rendered":"http:\/\/wordpress-367309-1145705.cloudwaysapps.com\/?p=4615"},"modified":"2009-06-25T13:43:31","modified_gmt":"2009-06-25T19:43:31","slug":"sears-tower-reaches-for-heights-of-efficiency-with-350-million-retrofit","status":"publish","type":"post","link":"https:\/\/sustainablog.org\/articles\/sears-tower-reaches-for-heights-of-efficiency-with-350-million-retrofit\/","title":{"rendered":"Sears Tower Reaches for Heights of Efficiency With $350 Million Retrofit"},"content":{"rendered":"
<\/a>The Sears Tower<\/a> loomed large during my childhood in the Chicago suburbs. I remember when it opened in 1973. We took a special trip downtown to see it. According to my aesthetics as a seven year old, it wasn\u2019t very elegant and I preferred the John Hancock Tower with its swanky restaurant on the 95th floor and proximity to Marshall Fields. Then the company my dad worked for was bought by Coldwell Banker, a subsidiary of Sears at the time, and his office was moved to the Tower. I spent some quality daddy-daughter time there, and one memorable summer got paid the incredibly generous sum of $8 an hour to take the train to the city every day, do some filing and hang out downtown.<\/p>\n But the Tower, in my mind, never had much to distinguish it other than a great view from the 103rd floor, its height of 110 stories and the convenience of the train station. But now everything is changing.<\/p>\n By the end of the summer, it will no longer be the Sears Tower. It will be called the Willis Tower, named for the global insurance broker. But more importantly, the building will undergo a $350 million efficiency and renewable energy retrofit that will reduce the base building electricity use by up to 80 percent – 68 million kilowatt hours annually or 150,000 barrels of oil every year. The retrofit will also create more than 3,600 jobs in the Chicago area.<\/p>\n [social_buttons]<\/p>\n <\/p>\n Chicago-based Adrian Smith + Gordon Gill Architecture (AS+GG) designed the retrofit strategy for the LEED certified building. Components will include<\/a>:<\/p>\n In addition, they will add a new park at Wacker Drive and Adams Street and the Adams Street granite wall will be replaced with an interactive digital display (sounds like they\u2019re having a bit of Millennium Park envy!), glass storefronts, and trees, which will be planted to form a landscaped terrace that will add a natural filter for carbon dioxide. A Sustainable Technology Learning Center at the building will teach visitors about ways to save energy and money. And there is also discussion of building an adjacent LEED Gold certified hotel.<\/p>\n Energy efficiency is nothing new for the building; since 1989, the building has reduced its annual electricity consumption by 34 percent its energy efficiency improvements since 1984 have resulted in a reduction of 51 million pounds of carbon emissions annually.<\/p>\n Having this as a demonstration project is critical. Buildings are the world\u2019s largest contributors to carbon emissions. And let\u2019s see how the financials work out. Average electricity costs<\/a> in the Chicago area are 14.5 cents per kilowatt hour. The planned efficiency and renewable energy measures will save 68,000,000 kilowatt hours per year. That\u2019s a $9,860,000 savings per year. The water conservation measures will save 24 million gallons of water. The average per gallon cost is $.0015, so that\u2019s another $36,000 a year in savings. So the building will see immediate savings of almost $10,000,000 a year, plus some much needed modernization.<\/p>\n Wind turbines, solar panels, efficient windows and roof top gardens? It has taken some time, but I think the Tower has finally won me over as my favorite building in Chicago!<\/p>\n Image credit:<\/strong> cikaga jamie at Flickr<\/a> under a Creative Commons license<\/a><\/p>\n","protected":false},"excerpt":{"rendered":" The Sears Tower loomed large during my childhood in the Chicago suburbs. I remember when it opened in 1973. We took a special trip downtown to see it. According to [ … ]<\/p>\n","protected":false},"author":76,"featured_media":4619,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[43,156,52,3504],"yoast_head":"\n\n