Exelon Headquarters, Chicago, Illinois, USA

The 10-storey Exelon Headquarters, the main office of the largest energy company in the USA, is located in the heart of Chicago. The administration of the company decided not to build a new premise, but to renovate a 40-year-old existing building so that it could reach LEED standards. The designers coped with the task successfully, and Exelon Headquarters Project earned LEED Platinum certification in May 2007. Moreover, the architects of the building created comfortable and healthy working conditions for all its employees. The renovation of the former office tower was completed in 2006. The green commercial interior is full of natural light thanks to a specially designed daylight-dimming system, the main function of which is to utilize lighting. As the company specializes in the field of energy, energy efficiency is of utmost importance. The quality of air and indoor temperature are constantly monitored. Gross floor area is 20,438 square meters (or 220,000 square feet). Water consumption is reduced by 31%. Built by Turner Construction, the building features glass-walled offices in the center of each of 10 floors.

By Astghik Atabekyan, www.building.am