[en] This magazine proposes an overview of the situation and perspectives of energy transition in French island territories: La Reunion (perspective of a possible energy self-sufficiency), Guyana (a high solar potential), Ouessant, Sein and Molene (objective of a 100 pc renewable energies system by 2030), Corsica (natural gas to improve its carbon assessment). It also comments some specific aspects of these evolutions: key role of green innovation, promising use of batteries for energy storage, development of electrical mobility (first charging station in Corsica), and use of LEDs for the reduction of the night pollution associated with public lighting