Faced with the stakes of sustainable development, the challenges imposed by climate change and the erosion of biodiversity must be taken into consideration coherently. To limit our impact on the climate, we must drastically rethink our relationship with energy and, first and foremost, what is known as carbon-intensive energy. Three complementary and insperable courses of action should allow us to reach such objectives : - firstly, energy sobriety; the best energy being energy which is not used, this challenges our behaviour - next, energy efficiency which stimulates techniques - and lastly, the use of sustainable energy wich we focus in this document This document considers and defines this sustainable energy for current issues. This sustainable energy groups togethers "sustainable" renewable energy and recoverable energy (R&RE). This is an opportunity to combine the issues of climate and biodiversity to help us approach the boundaries of what is possible for a sustainable development energy transition.