The climate crisis is a central concern of our current events. It has led to new policies that must be implemented at once, and constitutes a dizzying challenge for future generations. Energy transition, often seen as too technical or complicated a topic, is nonetheless pivtoal to solutions and requires data, analysis, and solidly backed-up reserch. This collective work puts its "cards on the table" by combining perspectives from economics, history, international relations, and political science. In twelve chapters, French and European academics from different generations and disciplines offer a survey of current thought on energy transition in France and all over the world.