Developing a climate-friendly and sustainable energy supply for tomorrow is the challenge faced today. Gas as a climate-friendly energy source can achieve more than short-term climate protection targets. Indeed, as a renewable or decarbonised gas produced in power-to-gas plants, for example, it is set to play a central role in the climate-neutral energy system of the future. The gas infrastructure provides an opportunity to transport very large quantities of renewable energy and to store them in the long term. The integration of renewable and decarbonised gases into the energy system can make a significant contribution to reducing carbon emissions in all consumption sectors quickly and cost-effectively.