Paolo Bertoldi is action leader for energy efficiency at the European Commission JRC. Ha has been working with the European Commission since 1986, first at DG Energy and Transport (DG TREN, Brussels Belgium), in charge of EU regulatory and voluntary programmes for energy efficiency in end-use equipment, buildings and industry.. Since May 2001, he is at the JRC in charge of research activities on energy efficiency policy analysis, the efficient use of and innovative policy instruments for energy efficiency (e.g. white certificates, financing mechanisms, ESCO, EPC, emission trading). He manages the GreenLight, GreenBuilding, and Motor Challenge and Standby Initiative programmes. He is a recognised expert on the ESCO industry. He has published over 100 papers on energy efficiency in scientific journals and conference proceedings.