Nathan Gauthier is an energy manager for the Philips North America account at Jones Lang LaSalle, a global real estate services firm. He is responsible for identifying and implementing energy conservation and demand reduction opportunities in a portfolio of 139 buildings and more than 9 million square feet. Prior to joining Jones Lang LaSalle, Gauthier was assistant director of the Harvard University Office for Sustainability, where he lead the organization?s sustainable building design, construction, and operations program, as well as the green building services offered to Harvard clients. Gauthier has consulted on more than 100 LEED (Leadership in Energy and Environmental Design) projects and is a member of the United States Green Building Council (USGBC) Energy and Atmosphere Technical Advisory Group and the USGBC board of directors.