[en] GRTgaz is a European leader in natural gas transportation and a world expert in gas systems. This publication presents the societal responsibility as being at the heart of GRTgaz strategy. The new 2021-2024 societal responsibility policy of GRTgaz is presented first. Then, the public service mission, key figures and research activities of GRTgaz, as well as the societal responsibility, the main extra-financial risks, opportunities and performance of the company are reviewed. Next, the safety, efficiency and ethical aspects of GRTgaz activities are presented as well as GRTgaz commitments in the energy transition: environmental impacts, carbon footprint, wastes valorization, species diversity protection, involvement in the transportation sector and in renewable gases development, smart grids and open data, open innovation.. Finally, the social policy with the personnel, the suppliers, the partners, the stakeholders and the clients are reviewed.