Mr Clerens studied law at the University of Saarbrücken and the University of Mainz. Since 1996, he has worked as a consultant for a private company specialising in European Affairs in Brussels. In his capacity as Brussels Representative of different European associations, he has been involved in the climate and energy field since 2003.
He is and was an expert for several Technical Expert Groups by the European Commission, supporting the European decision-making process.
He has managed the EASE office in Brussels as Secretary General since its establishment in 2011.