Michael Geißler has been the sole managing director of the Berlin Energy Agency (BEA) since 1997. After his studies in Process- and Environmental Engineering, Mr. Geißler worked as a project manager for the former Bewag AG (now: Vattenfall Europe SE). Later on, he worked freelance as a consulting engineer. After a further degree in Industrial Economics, Mr. Geißler joined the Berlin Energy Agency as an associate director in 1994, building up the technology and project department. He is a chairman of the Association of Energy Agencies in Germany (eaD eV), a member of the Berlin Climate Protection Council, a member of the advisory board of the Investitionsbank Berlin (IBB) and of the deliberative assembly of the Chamber of Commerce (IHK) in Berlin.