For this reason, the National Energy Strategy and the fight against climate change include: - The training towards carbon neutrality of the professional sector, a key sector in the execution of actions within the framework of energy transition (energy efficiency, production of renewable energies, etc.). Article 43 of Law 21/2018, of 13 September, on the promotion of energy transition and climate change, stipulates more specifically that professionals who provide services in the executive exchange of installation, assembly and construction works in the context of energy transition, require specific professional training, with the ultimate objective of ensuring a high level of quality in the services provided and ensuring consumer protection.