The current international and European context faces new challenges to atttend the effects of climate change with speed and success. This implies adopting common measures that are effective; and in this sense, the energy transition process conducted in accordance with the strategic framework drawn up by the European Union is essential. Through it, the development of renewable energies will be promoted, as well as reducing the use of polluting sources, and promoting the use of cleaner energies. In parallel, it will be essential to have regulations (regulation and self-regulation) that promote more sustainable, eco-efficient and co-responsible models. In this regard, it can be considered that the contribution that can be provided from the Public Sector will be essential, through proactive action, which can serve as a useful illustrative guide and to promote good practices. Based on this motivation, this work analyzes some main questions on this topic, in accordance with the planning and planned objectives, as well as the most significant tools that are being implemented.