Dan Probst is Global Chairman of Energy and Sustainability Services (ESS) and also Director of Technical Services at Jones Lang LaSalle. With ESS, Probst leads a team that develops and delivers products and services to help clients reduce energy costs and their real estate-related environmental footprint through innovative portfolio and occupancy strategies, workplace standards and operating practices. With Technical Services, Probst leads a team that improves the energy and operational performance of buildings, with expertise in building operating engineering, mobile engineering services, critical environment management, energy services and building condition assessment services. Probst is the author of Six Sigma for Sustainability and has been with JLL for 27 years. He holds an MBA from Indiana University and a BS in mechanical engineering from Purdue University.