Lhe idea is gaining ground: among the efforts to reduce greenhouse gas emissions, the principle of increasing the price per tonne of CO2 seems more and more essential. The question is undoubtedly less to know if carbon will be taxed, but when and how… Many European countries (France, Sweden, Luxembourg, Switzerland, Denmark…) have introduced their own “tax” on carbon. Even Belgium, where the political class is known for its extreme reluctance towards taxation – when it comes to announcing an increase – the idea is moving forward.