As the initiator of the “Environmental Spring” project, he encouraged the different regions to coordinate their environmental policies and combat global warming more effectively. He represented Belgium at the Copenhagen Conference where he pleaded energetically for ambitious goals in the fight against global warming. President of the Council of Ministers for Energy and Climate of the European Union during the Belgian presidency in 2010, he urged notably that the European Union pledge to reach 100% renewable energy by 2050. To this end, he initiated collaboration among nine European countries aimed at creating the largest offshore wind turbine park in the world. At the time of the legislative elections of 13 June 2010, he was head of the list for the Socialist Party in the Senate, which recorded an increase of three points and two elected candidates; Paul Magnette’s personal result was 264,167 votes, which made it one of the largest ‘voting machines’ of the country, and made him ‘Man of the Year’ for the magazine Le Vif.