Little by little, the drive for a sustainability approach has started to shape entire sectors of the global economy, including energy. The signature of the Paris Agreement in December 2015 has been a true landmark for policy-makers, citizens and economic actors. This global commitment is shaping legal frameworks, influencing radical overhauls of companies’ business models and the way we all consume and live. Yet, sustainable development is not an end in itself but rather a continuous process, a permanent walk on unchartered paths.