On the subject of green gas
Renewable and decarbonised gases will be a key component of the energy transition and will play an important role in the energy mix of the future. Hydrogen serves as a clean energy carrier, e.g. for fuel cell technology. The synthetic methane produced can be used as a surrogate for natural gas and turn this green step by step, making gas a climate-neutral energy source in the long term. While biomethane and synthetic methane can easily be used as a substitute for natural gas, special conditions apply to hydrogen.
The natural gas infrastructure and numerous end uses, especially in the heating market, are already "hydrogen-ready" (DVGW G 260 / G262) up to a share of 10% by volume in natural gas. In the future, 20% by volume of hydrogen should be fed in. The DVGW estimates that a hydrogen tolerance of up to 50% by volume will be possible in the next few years. However, there are still restrictions, particularly in the industrial sector, but also in the transport sector or when used in gas turbines. In order to initiate the use of green and decarbonised gases, the TSOs recommend the prompt introduction of a “green gas quota”.