2019 – Today Vice-President of the Walloon Government. Walloon Minister for Climate, Energy, Mobility and Infrastructures.
01/2023 – 01/2024 Vice-President of IRENA (International Renewable Energy Agency).
2014 – 2019 Walloon Member of Parliament for the arrondissement of Liège, Member of Parliament for the Wallonia-Brussels Federation and Community Senator.
2009 – 2014 Walloon Minister for the Environment, regional planning and Mobility.
2007 – 2009 Federal deputy in the House of Representatives.
2006 – 2009 Local councillor in Sprimont.
2003 – 2007 Political director of the Ecolo party.
1999 – 2004 Walloon and Community Member of Parliament.
1997 – 1999 Research engineer (Catholic University of Louvain).
1995 – 1997 Assistant in Algorithms and Numerical Analysis (University of Liège).
1995 – 1996 Researcher in Technology Assessment (University of Namur).
1995 – 1997 Diploma in electromechanical engineering (1995) and master's degree in management (1997) at the University of Liège.
1994 – 1995 President of the French-speaking Students Federation of Belgium.