[en] This guide, intended for elected officials responsible for climate-energy issues, will allow to better understand the major current and future energy issues as well as the skills and role that communities have to play. It also aims to provide the operational elements to set up a transversal policy aimed at accelerating the energy transition at the local level and benefiting all citizens. This guide proposes to the elected official the keys to acting on the following themes: - Develop and implement a public energy policy in its territory with the right planning, monitoring and animation tools; - Control the energy consumption of its heritage and its territory (public buildings, lighting, mobility, etc.); - Accelerate the energy renovation of housing and fight against energy insecurity; - Support the development of all renewable and recovery energies (biomass, geothermal energy, waste heat, wind, photovoltaic, biogas, etc.) as well as hydrogen; - Putting its energy networks at the service of the energy transition (electricity, gas, heat).