|Photo © Harlan Hambright, H2O Photography|
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Gross area: 2,500,00 ft2
Date completed: November 2009
Profile: The Duke Energy Center is the first highrise in the nation to attain LEED Core and Shell Platinum certification. Office space comprises 48 floors of the tower and all tenants are required to pursue LEED CI certification. Floors four through seven are specially designed for Wells Fargo’s trading activities with 20-foot heights. The building sits on an entire city block and provides over 23 acres of underground parking. A rainfall water storage system reduces the amount of city water needed to run the building. Rainwater is recycled for the cooling tower make-up water and to irrigate the “podium,” a park-like area that sits atop a lower, ten-story portion of the facility.
Energy-saving innovation: The Duke Energy Center is 22 percent more energy efficient than a tower of comparable size, saving approximately 5 million kilowatt hours per year. Two feet of clear glass was included at the top of each floor and daylight harvesting blinds direct light into the building; lighting controls respond to the amount accordingly. High performance glazing and super efficient HVAC systems and controls reduce the demands of the building.
Exterior cladding NuCor; Bull Moose (steel); Gardner Metal Systems (curtainwall metal extrusions); Armteco Systems (Alcoa-Reyonbond ACM); Gerdau Ameristeel