Dr Tudor Constantinescu is Principal Adviser to the Director General for Energy in the European Commission since March 2011. He is engineer and economist by education. Before joining the Commission, he set up as Executive Director the Buildings Performance Institute Europe. He was the president of the Romanian Agency for Energy Conservation and for the period 2008-2009 he ensured the presidency of the EnR network of European Energy Agencies. Between 1996-2007, he coordinated the energy efficiency and related environmental activities of the Energy Charter Secretariat in Brussels.