The article examines such concepts and their interrelationship as sustainable development, decarbonization, energy transition and other concepts from the point of view of law. Energy law and energy legislation are the main legal categories that ensure the energy transition. The intersectoral and interdisciplinary nature of legal regulation in the field under consideration is emphasized. The international legal aspects of the decarbonization problem are extremely important. The main focus is on new categories and concepts enshrined in the legislation of the Russian Federation on limiting greenhouse gas emissions